diff --git a/robot/resources/lib/python_keywords/acl.py b/robot/resources/lib/python_keywords/acl.py
index 6b5b544..a26b362 100644
--- a/robot/resources/lib/python_keywords/acl.py
+++ b/robot/resources/lib/python_keywords/acl.py
@@ -1,34 +1,34 @@
 #!/usr/bin/python3.8
 
-from enum import Enum, auto
+import base64
 import json
 import os
 import re
 import uuid
+from enum import Enum, auto
 
-import base64
 import base58
 from cli_helpers import _cmd_run
 from common import ASSETS_DIR, NEOFS_ENDPOINT, WALLET_PASS
-from robot.api.deco import keyword
 from robot.api import logger
-
+from robot.api.deco import keyword
 
 """
 Robot Keywords and helper functions for work with NeoFS ACL.
 """
 
-
 ROBOT_AUTO_KEYWORDS = False
 
 # path to neofs-cli executable
 NEOFS_CLI_EXEC = os.getenv('NEOFS_CLI_EXEC', 'neofs-cli')
 EACL_LIFETIME = 100500
 
+
 class AutoName(Enum):
     def _generate_next_value_(name, start, count, last_values):
         return name
 
+
 class Role(AutoName):
     USER = auto()
     SYSTEM = auto()
@@ -65,12 +65,13 @@ def _encode_cid_for_eacl(cid: str) -> str:
     cid_base58 = base58.b58decode(cid)
     return base64.b64encode(cid_base58).decode("utf-8")
 
+
 @keyword('Create eACL')
 def create_eacl(cid: str, rules_list: list):
     table = f"{os.getcwd()}/{ASSETS_DIR}/eacl_table_{str(uuid.uuid4())}.json"
     rules = ""
     for rule in rules_list:
-# TODO: check if $Object: is still necessary for filtering in the newest releases
+        # TODO: check if $Object: is still necessary for filtering in the newest releases
         rules += f"--rule '{rule}' "
     cmd = (
         f"{NEOFS_CLI_EXEC} acl extended create --cid {cid} "
@@ -99,47 +100,47 @@ def form_bearertoken_file(wif: str, cid: str, eacl_records: list) -> str:
         json_eacl = json.loads(eacl)
     logger.info(json_eacl)
     eacl_result = {
-                    "body":
+        "body":
+            {
+                "eaclTable":
                     {
-                        "eaclTable":
-                        {
-                            "containerID":
+                        "containerID":
                             {
                                 "value": enc_cid
                             },
-                            "records": []
-                        },
-                        "lifetime":
-                        {
-                            "exp": EACL_LIFETIME,
-                            "nbf": "1",
-                            "iat": "0"
-                        }
+                        "records": []
+                    },
+                "lifetime":
+                    {
+                        "exp": EACL_LIFETIME,
+                        "nbf": "1",
+                        "iat": "0"
                     }
-                }
+            }
+    }
 
     if not eacl_records:
-        raise(f"Got empty eacl_records list: {eacl_records}")
+        raise (f"Got empty eacl_records list: {eacl_records}")
     for record in eacl_records:
         op_data = {
-                "operation": record['Operation'],
-                "action":   record['Access'],
-                "filters":  [],
-                "targets":  []
-            }
+            "operation": record['Operation'],
+            "action": record['Access'],
+            "filters": [],
+            "targets": []
+        }
 
         if Role(record['Role']):
             op_data['targets'] = [
-                                    {
-                                        "role": record['Role']
-                                    }
-                                ]
+                {
+                    "role": record['Role']
+                }
+            ]
         else:
             op_data['targets'] = [
-                                    {
-                                        "keys": [ record['Role'] ]
-                                    }
-                                ]
+                {
+                    "keys": [record['Role']]
+                }
+            ]
 
         if 'Filters' in record.keys():
             op_data["filters"].append(record['Filters'])
diff --git a/robot/resources/lib/python_keywords/cli_helpers.py b/robot/resources/lib/python_keywords/cli_helpers.py
index e34c80a..e0f0d15 100644
--- a/robot/resources/lib/python_keywords/cli_helpers.py
+++ b/robot/resources/lib/python_keywords/cli_helpers.py
@@ -6,8 +6,8 @@ and other CLIs.
 """
 
 import subprocess
-import pexpect
 
+import pexpect
 from robot.api import logger
 
 ROBOT_AUTO_KEYWORDS = False
@@ -21,20 +21,21 @@ def _cmd_run(cmd, timeout=30):
     try:
         logger.info(f"Executing command: {cmd}")
         compl_proc = subprocess.run(cmd, check=True, universal_newlines=True,
-                    stdout=subprocess.PIPE, stderr=subprocess.STDOUT, timeout=timeout,
-                    shell=True)
+                                    stdout=subprocess.PIPE, stderr=subprocess.STDOUT, timeout=timeout,
+                                    shell=True)
         output = compl_proc.stdout
         logger.info(f"Output: {output}")
         return output
     except subprocess.CalledProcessError as exc:
         raise RuntimeError(f"Error:\nreturn code: {exc.returncode} "
-        f"\nOutput: {exc.output}") from exc
+                           f"\nOutput: {exc.output}") from exc
     except Exception as exc:
         return_code, _ = subprocess.getstatusoutput(cmd)
         logger.info(f"Error:\nreturn code: {return_code}\nOutput: "
-        f"{exc.output.decode('utf-8') if type(exc.output) is bytes else exc.output}")
+                    f"{exc.output.decode('utf-8') if type(exc.output) is bytes else exc.output}")
         raise
 
+
 def _run_with_passwd(cmd):
     child = pexpect.spawn(cmd)
     child.expect(".*")
diff --git a/robot/resources/lib/python_keywords/cli_keywords.py b/robot/resources/lib/python_keywords/cli_keywords.py
index d7fb598..201261e 100644
--- a/robot/resources/lib/python_keywords/cli_keywords.py
+++ b/robot/resources/lib/python_keywords/cli_keywords.py
@@ -6,6 +6,7 @@ from robot.api.deco import keyword
 
 ROBOT_AUTO_KEYWORDS = False
 
+
 @keyword('Run Process And Enter Empty Password')
 def run_proccess_and_interact(cmd: str) -> str:
     p = pexpect.spawn(cmd)
diff --git a/robot/resources/lib/python_keywords/complex_object_actions.py b/robot/resources/lib/python_keywords/complex_object_actions.py
index 2d473b6..97dbfbe 100644
--- a/robot/resources/lib/python_keywords/complex_object_actions.py
+++ b/robot/resources/lib/python_keywords/complex_object_actions.py
@@ -10,18 +10,18 @@
     first non-null response.
 """
 
-from common import NEOFS_NETMAP
-import neofs_verbs
-
-from robot.api.deco import keyword
 from robot.api import logger
+from robot.api.deco import keyword
 from robot.libraries.BuiltIn import BuiltIn
 
+import neofs_verbs
+from common import NEOFS_NETMAP
+
 ROBOT_AUTO_KEYWORDS = False
 
 
 @keyword('Get Link Object')
-def get_link_object(wallet: str, cid: str, oid: str, bearer_token: str=""):
+def get_link_object(wallet: str, cid: str, oid: str, bearer_token: str = ""):
     """
         Args:
             wallet (str): path to the wallet on whose behalf the Storage Nodes
@@ -37,10 +37,10 @@ def get_link_object(wallet: str, cid: str, oid: str, bearer_token: str=""):
     for node in NEOFS_NETMAP:
         try:
             resp = neofs_verbs.head_object(wallet, cid, oid,
-                    endpoint=node,
-                    is_raw=True,
-                    is_direct=True,
-                    bearer_token=bearer_token)
+                                           endpoint=node,
+                                           is_raw=True,
+                                           is_direct=True,
+                                           bearer_token=bearer_token)
             if resp['link']:
                 return resp['link']
         except Exception:
@@ -65,9 +65,9 @@ def get_last_object(wallet: str, cid: str, oid: str):
     for node in NEOFS_NETMAP:
         try:
             resp = neofs_verbs.head_object(wallet, cid, oid,
-                    endpoint=node,
-                    is_raw=True,
-                    is_direct=True)
+                                           endpoint=node,
+                                           is_raw=True,
+                                           is_direct=True)
             if resp['lastPart']:
                 return resp['lastPart']
         except Exception:
diff --git a/robot/resources/lib/python_keywords/container.py b/robot/resources/lib/python_keywords/container.py
index 9b19a7f..3dedea8 100644
--- a/robot/resources/lib/python_keywords/container.py
+++ b/robot/resources/lib/python_keywords/container.py
@@ -8,22 +8,21 @@
 import json
 import time
 
-from common import NEOFS_ENDPOINT, COMMON_PLACEMENT_RULE, NEOFS_CLI_EXEC, WALLET_PASS
-from cli_helpers import _cmd_run
-from data_formatters import dict_to_attrs
-import json_transformers
-
-from robot.api.deco import keyword
 from robot.api import logger
+from robot.api.deco import keyword
 
+import json_transformers
+from cli_helpers import _cmd_run
+from common import NEOFS_ENDPOINT, COMMON_PLACEMENT_RULE, NEOFS_CLI_EXEC, WALLET_PASS
+from data_formatters import dict_to_attrs
 
 ROBOT_AUTO_KEYWORDS = False
 
 
 @keyword('Create Container')
-def create_container(wallet: str, rule: str=COMMON_PLACEMENT_RULE, basic_acl: str='',
-        attributes: dict={}, session_token: str='', session_wallet: str='',
-        options: str=''):
+def create_container(wallet: str, rule: str = COMMON_PLACEMENT_RULE, basic_acl: str = '',
+                     attributes: dict = {}, session_token: str = '', session_wallet: str = '',
+                     options: str = ''):
     """
         A wrapper for `neofs-cli container create` call.
 
@@ -58,18 +57,18 @@ def create_container(wallet: str, rule: str=COMMON_PLACEMENT_RULE, basic_acl: st
 
     logger.info("Container created; waiting until it is persisted in sidechain")
 
-    deadline_to_persist = 15 # seconds
+    deadline_to_persist = 15  # seconds
     for i in range(0, deadline_to_persist):
         time.sleep(1)
         containers = list_containers(wallet)
         if cid in containers:
             break
         logger.info(f"There is no {cid} in {containers} yet; continue")
-        if i+1 == deadline_to_persist:
+        if i + 1 == deadline_to_persist:
             raise RuntimeError(
-                            f"After {deadline_to_persist} seconds the container "
-                            f"{cid} hasn't been persisted; exiting"
-                        )
+                f"After {deadline_to_persist} seconds the container "
+                f"{cid} hasn't been persisted; exiting"
+            )
     return cid
 
 
@@ -113,7 +112,7 @@ def get_container(wallet: str, cid: str):
         attributes[attr['key']] = attr['value']
     container_info['attributes'] = attributes
     container_info['ownerID'] = json_transformers.json_reencode(
-            container_info['ownerID']['value'])
+        container_info['ownerID']['value'])
     return container_info
 
 
diff --git a/robot/resources/lib/python_keywords/data_formatters.py b/robot/resources/lib/python_keywords/data_formatters.py
index 437ca37..1880d23 100644
--- a/robot/resources/lib/python_keywords/data_formatters.py
+++ b/robot/resources/lib/python_keywords/data_formatters.py
@@ -7,15 +7,15 @@ from functools import reduce
 
 
 def dict_to_attrs(attrs: dict):
-    '''
+    """
     This function takes dictionary of object attributes and converts them
-    into the string. The string is passed to `--attibutes` key of the
+    into the string. The string is passed to `--attributes` key of the
     neofs-cli.
 
     Args:
-        attrs (dict): object attirbutes in {"a": "b", "c": "d"} format.
+        attrs (dict): object attributes in {"a": "b", "c": "d"} format.
 
     Returns:
         (str): string in "a=b,c=d" format.
-    '''
-    return reduce(lambda a,b: f"{a},{b}", map(lambda i: f"{i}={attrs[i]}", attrs))
+    """
+    return reduce(lambda a, b: f"{a},{b}", map(lambda i: f"{i}={attrs[i]}", attrs))
diff --git a/robot/resources/lib/python_keywords/http_gate.py b/robot/resources/lib/python_keywords/http_gate.py
index eb756ed..26eecd7 100644
--- a/robot/resources/lib/python_keywords/http_gate.py
+++ b/robot/resources/lib/python_keywords/http_gate.py
@@ -3,15 +3,16 @@
 import shutil
 
 import requests
+from robot.api import logger
+from robot.api.deco import keyword
+from robot.libraries.BuiltIn import BuiltIn
 
 from common import HTTP_GATE
-from robot.api.deco import keyword
-from robot.api import logger
-from robot.libraries.BuiltIn import BuiltIn
 
 ROBOT_AUTO_KEYWORDS = False
 ASSETS_DIR = BuiltIn().get_variable_value("${ASSETS_DIR}")
 
+
 @keyword('Get via HTTP Gate')
 def get_via_http_gate(cid: str, oid: str):
     """
diff --git a/robot/resources/lib/python_keywords/json_transformers.py b/robot/resources/lib/python_keywords/json_transformers.py
index 2af13d2..218d9fd 100644
--- a/robot/resources/lib/python_keywords/json_transformers.py
+++ b/robot/resources/lib/python_keywords/json_transformers.py
@@ -1,24 +1,25 @@
 #!/usr/bin/python3
 
-'''
+"""
     When doing requests to NeoFS, we get JSON output as an automatically decoded
     structure from protobuf. Some fields are decoded with boilerplates and binary
     values are Base64-encoded.
 
     This module contains functions which rearrange the structure and reencode binary
     data from Base64 to Base58.
-'''
-
+"""
 
 import base64
+
 import base58
 
 ROBOT_AUTO_KEYWORDS = False
 
+
 def decode_simple_header(data: dict):
-    '''
+    """
     This function reencodes Simple Object header and its attributes.
-    '''
+    """
     try:
         data = decode_common_fields(data)
 
@@ -34,32 +35,33 @@ def decode_simple_header(data: dict):
 
 
 def decode_split_header(data: dict):
-    '''
+    """
     This function rearranges Complex Object header.
     The header holds SplitID, a random unique
     number, which is common among all splitted objects, and IDs of the Linking
     Object and the last splitted Object.
-    '''
+    """
     try:
         data["splitId"] = json_reencode(data["splitId"])
         data["lastPart"] = (
-                    json_reencode(data["lastPart"]["value"])
-                    if data["lastPart"] else None
-                )
+            json_reencode(data["lastPart"]["value"])
+            if data["lastPart"] else None
+        )
         data["link"] = (
-                    json_reencode(data["link"]["value"])
-                    if data["link"] else None
-                )
+            json_reencode(data["link"]["value"])
+            if data["link"] else None
+        )
     except Exception as exc:
         raise ValueError(f"failed to decode JSON output: {exc}") from exc
 
     return data
 
+
 def decode_linking_object(data: dict):
-    '''
+    """
     This function reencodes Linking Object header.
     It contains IDs of child Objects and Split Chain data.
-    '''
+    """
     try:
         data = decode_simple_header(data)
         # reencoding Child Object IDs
@@ -68,13 +70,13 @@ def decode_linking_object(data: dict):
             data['header']['split']['children'][ind] = json_reencode(val['value'])
         data['header']['split']['splitID'] = json_reencode(data['header']['split']['splitID'])
         data['header']['split']['previous'] = (
-                json_reencode(data['header']['split']['previous']['value'])
-                if data['header']['split']['previous'] else None
-            )
+            json_reencode(data['header']['split']['previous']['value'])
+            if data['header']['split']['previous'] else None
+        )
         data['header']['split']['parent'] = (
-                json_reencode(data['header']['split']['parent']['value'])
-                if data['header']['split']['parent'] else None
-            )
+            json_reencode(data['header']['split']['parent']['value'])
+            if data['header']['split']['parent'] else None
+        )
     except Exception as exc:
         raise ValueError(f"failed to decode JSON output: {exc}") from exc
 
@@ -82,9 +84,9 @@ def decode_linking_object(data: dict):
 
 
 def decode_storage_group(data: dict):
-    '''
+    """
     This function reencodes Storage Group header.
-    '''
+    """
     try:
         data = decode_common_fields(data)
     except Exception as exc:
@@ -92,53 +94,56 @@ def decode_storage_group(data: dict):
 
     return data
 
+
 def decode_tombstone(data: dict):
-    '''
+    """
     This function reencodes Tombstone header.
-    '''
+    """
     try:
         data = decode_simple_header(data)
         data['header']['sessionToken'] = decode_session_token(
-                data['header']['sessionToken'])
+            data['header']['sessionToken'])
     except Exception as exc:
         raise ValueError(f"failed to decode JSON output: {exc}") from exc
     return data
 
 
 def decode_session_token(data: dict):
-    '''
+    """
     This function reencodes a fragment of header which contains
     information about session token.
-    '''
+    """
     data['body']['object']['address']['containerID'] = json_reencode(
-            data['body']['object']['address']['containerID']['value'])
+        data['body']['object']['address']['containerID']['value'])
     data['body']['object']['address']['objectID'] = json_reencode(
-            data['body']['object']['address']['objectID']['value'])
+        data['body']['object']['address']['objectID']['value'])
     return data
 
+
 def json_reencode(data: str):
-    '''
+    """
     According to JSON protocol, binary data (Object/Container/Storage Group IDs, etc)
     is converted to string via Base58 encoder. But we usually operate with Base64-encoded
     format.
     This function reencodes given Base58 string into the Base64 one.
-    '''
+    """
     return base58.b58encode(base64.b64decode(data)).decode("utf-8")
 
 
 def encode_for_json(data: str):
-    '''
+    """
     This function encodes binary data for sending them as protobuf
     structures.
-    '''
+    """
     return base64.b64encode(base58.b58decode(data)).decode('utf-8')
 
+
 def decode_common_fields(data: dict):
-    '''
+    """
     Despite of type (simple/complex Object, Storage Group, etc) every Object
     header contains several common fields.
     This function rearranges these fields.
-    '''
+    """
     # reencoding binary IDs
     data["objectID"] = json_reencode(data["objectID"]["value"])
     data["header"]["containerID"] = json_reencode(data["header"]["containerID"]["value"])
@@ -146,6 +151,6 @@ def decode_common_fields(data: dict):
     data["header"]["homomorphicHash"] = json_reencode(data["header"]["homomorphicHash"]["sum"])
     data["header"]["payloadHash"] = json_reencode(data["header"]["payloadHash"]["sum"])
     data["header"]["version"] = (
-            f"{data['header']['version']['major']}{data['header']['version']['minor']}"
-        )
+        f"{data['header']['version']['major']}{data['header']['version']['minor']}"
+    )
     return data
diff --git a/robot/resources/lib/python_keywords/neofs.py b/robot/resources/lib/python_keywords/neofs.py
index e93d48a..aefc078 100644
--- a/robot/resources/lib/python_keywords/neofs.py
+++ b/robot/resources/lib/python_keywords/neofs.py
@@ -5,12 +5,13 @@ import os
 import random
 
 from neo3 import wallet
-from common import NEOFS_NETMAP_DICT
-import neofs_verbs
-from robot.api.deco import keyword
 from robot.api import logger
+from robot.api.deco import keyword
 from robot.libraries.BuiltIn import BuiltIn
 
+import neofs_verbs
+from common import NEOFS_NETMAP_DICT
+
 ROBOT_AUTO_KEYWORDS = False
 
 # path to neofs-cli executable
@@ -30,7 +31,7 @@ def verify_head_tombstone(wallet_path: str, cid: str, oid_ts: str, oid: str):
     header = header['header']
 
     BuiltIn().should_be_equal(header["containerID"], cid,
-            msg="Tombstone Header CID is wrong")
+                              msg="Tombstone Header CID is wrong")
 
     wlt_data = dict()
     with open(wallet_path, 'r') as fout:
@@ -39,21 +40,21 @@ def verify_head_tombstone(wallet_path: str, cid: str, oid_ts: str, oid: str):
     addr = wlt.accounts[0].address
 
     BuiltIn().should_be_equal(header["ownerID"], addr,
-            msg="Tombstone Owner ID is wrong")
+                              msg="Tombstone Owner ID is wrong")
 
     BuiltIn().should_be_equal(header["objectType"], 'TOMBSTONE',
-            msg="Header Type isn't Tombstone")
+                              msg="Header Type isn't Tombstone")
 
     BuiltIn().should_be_equal(header["sessionToken"]["body"]["object"]["verb"], 'DELETE',
-            msg="Header Session Type isn't DELETE")
+                              msg="Header Session Type isn't DELETE")
 
     BuiltIn().should_be_equal(header["sessionToken"]["body"]["object"]["address"]["containerID"],
-            cid,
-            msg="Header Session ID is wrong")
+                              cid,
+                              msg="Header Session ID is wrong")
 
     BuiltIn().should_be_equal(header["sessionToken"]["body"]["object"]["address"]["objectID"],
-            oid,
-            msg="Header Session OID is wrong")
+                              oid,
+                              msg="Header Session OID is wrong")
 
 
 @keyword('Get control endpoint with wif')
diff --git a/robot/resources/lib/python_keywords/neofs_verbs.py b/robot/resources/lib/python_keywords/neofs_verbs.py
index 266b306..7534889 100644
--- a/robot/resources/lib/python_keywords/neofs_verbs.py
+++ b/robot/resources/lib/python_keywords/neofs_verbs.py
@@ -6,17 +6,17 @@
 
 import json
 import os
-import re
 import random
+import re
 import uuid
 
-from common import NEOFS_ENDPOINT, ASSETS_DIR, NEOFS_NETMAP, WALLET_PASS
-from cli_helpers import _cmd_run
-import json_transformers
-from data_formatters import dict_to_attrs
-
-from robot.api.deco import keyword
 from robot.api import logger
+from robot.api.deco import keyword
+
+import json_transformers
+from cli_helpers import _cmd_run
+from common import NEOFS_ENDPOINT, ASSETS_DIR, NEOFS_NETMAP, WALLET_PASS
+from data_formatters import dict_to_attrs
 
 ROBOT_AUTO_KEYWORDS = False
 
@@ -25,9 +25,9 @@ NEOFS_CLI_EXEC = os.getenv('NEOFS_CLI_EXEC', 'neofs-cli')
 
 
 @keyword('Get object')
-def get_object(wallet: str, cid: str, oid: str, bearer_token: str="",
-    write_object: str="", endpoint: str="", options: str="" ):
-    '''
+def get_object(wallet: str, cid: str, oid: str, bearer_token: str = "",
+               write_object: str = "", endpoint: str = "", options: str = ""):
+    """
     GET from NeoFS.
 
     Args:
@@ -40,7 +40,7 @@ def get_object(wallet: str, cid: str, oid: str, bearer_token: str="",
         options (optional, str): any options which `neofs-cli object get` accepts
     Returns:
         (str): path to downloaded file
-    '''
+    """
 
     if not write_object:
         write_object = str(uuid.uuid4())
@@ -62,8 +62,8 @@ def get_object(wallet: str, cid: str, oid: str, bearer_token: str="",
 # TODO: make `bearer_token` optional
 @keyword('Get Range Hash')
 def get_range_hash(wallet: str, cid: str, oid: str, bearer_token: str, range_cut: str,
-        options: str=""):
-    '''
+                   options: str = ""):
+    """
     GETRANGEHASH of given Object.
 
     Args:
@@ -76,7 +76,7 @@ def get_range_hash(wallet: str, cid: str, oid: str, bearer_token: str, range_cut
         options (optional, str): any options which `neofs-cli object hash` accepts
     Returns:
         None
-    '''
+    """
     cmd = (
         f'{NEOFS_CLI_EXEC} --rpc-endpoint {NEOFS_ENDPOINT} --wallet {wallet} '
         f'object hash --cid {cid} --oid {oid} --range {range_cut} --config {WALLET_PASS} '
@@ -89,9 +89,9 @@ def get_range_hash(wallet: str, cid: str, oid: str, bearer_token: str, range_cut
 
 
 @keyword('Put object')
-def put_object(wallet: str, path: str, cid: str, bearer: str="", user_headers: dict={},
-    endpoint: str="", options: str="" ):
-    '''
+def put_object(wallet: str, path: str, cid: str, bearer: str = "", user_headers: dict = {},
+               endpoint: str = "", options: str = ""):
+    """
     PUT of given file.
 
     Args:
@@ -104,7 +104,7 @@ def put_object(wallet: str, path: str, cid: str, bearer: str="", user_headers: d
         options (optional, str): any options which `neofs-cli object put` accepts
     Returns:
         (str): ID of uploaded Object
-    '''
+    """
     if not endpoint:
         endpoint = random.sample(NEOFS_NETMAP, 1)[0]
     cmd = (
@@ -121,8 +121,8 @@ def put_object(wallet: str, path: str, cid: str, bearer: str="", user_headers: d
 
 
 @keyword('Delete object')
-def delete_object(wallet: str, cid: str, oid: str, bearer: str="", options: str=""):
-    '''
+def delete_object(wallet: str, cid: str, oid: str, bearer: str = "", options: str = ""):
+    """
     DELETE an Object.
 
     Args:
@@ -133,7 +133,7 @@ def delete_object(wallet: str, cid: str, oid: str, bearer: str="", options: str=
         options (optional, str): any options which `neofs-cli object delete` accepts
     Returns:
         (str): Tombstone ID
-    '''
+    """
     cmd = (
         f'{NEOFS_CLI_EXEC} --rpc-endpoint {NEOFS_ENDPOINT} --wallet {wallet} '
         f'object delete --cid {cid} --oid {oid} {options} --config {WALLET_PASS} '
@@ -149,20 +149,21 @@ def delete_object(wallet: str, cid: str, oid: str, bearer: str="", options: str=
 # TODO: make `bearer` an optional parameter
 @keyword('Get Range')
 def get_range(wallet: str, cid: str, oid: str, file_path: str, bearer: str, range_cut: str,
-         options:str=""):
-    '''
+              options: str = ""):
+    """
     GETRANGE an Object.
 
     Args:
         wallet (str): wallet on whose behalf GETRANGE is done
         cid (str): ID of Container where we get the Object from
         oid (str): ID of Object we are going to request
+        file_path (str): file path
         range_cut (str): range to take data from in the form offset:length
         bearer (optional, str): path to Bearer Token file, appends to `--bearer` key
         options (optional, str): any options which `neofs-cli object range` accepts
     Returns:
         (void)
-    '''
+    """
     range_file = f"{ASSETS_DIR}/{uuid.uuid4()}"
     cmd = (
         f'{NEOFS_CLI_EXEC} --rpc-endpoint {NEOFS_ENDPOINT} --wallet {wallet} '
@@ -178,9 +179,9 @@ def get_range(wallet: str, cid: str, oid: str, file_path: str, bearer: str, rang
 
 
 @keyword('Search object')
-def search_object(wallet: str, cid: str, keys: str="", bearer: str="", filters: dict={},
-        expected_objects_list=[]):
-    '''
+def search_object(wallet: str, cid: str, keys: str = "", bearer: str = "", filters: dict = {},
+                  expected_objects_list=[]):
+    """
     SEARCH an Object.
 
     Args:
@@ -193,7 +194,7 @@ def search_object(wallet: str, cid: str, keys: str="", bearer: str="", filters:
         expected_objects_list (optional, list): a list of ObjectIDs to compare found Objects with
     Returns:
         (list): list of found ObjectIDs
-    '''
+    """
     filters_result = ""
     if filters:
         filters_result += "--filters "
@@ -215,16 +216,16 @@ def search_object(wallet: str, cid: str, keys: str="", bearer: str="", filters:
                         f"is equal for expected list '{expected_objects_list}'")
         else:
             logger.warn(f"Found object list {found_objects} ",
-                                f"is not equal to expected list '{expected_objects_list}'")
+                        f"is not equal to expected list '{expected_objects_list}'")
 
     return found_objects
 
 
 @keyword('Head object')
-def head_object(wallet: str, cid: str, oid: str, bearer_token: str="",
-    options:str="", endpoint: str="", json_output: bool = True,
-    is_raw: bool = False, is_direct: bool = False):
-    '''
+def head_object(wallet: str, cid: str, oid: str, bearer_token: str = "",
+                options: str = "", endpoint: str = "", json_output: bool = True,
+                is_raw: bool = False, is_direct: bool = False):
+    """
     HEAD an Object.
 
     Args:
@@ -245,7 +246,7 @@ def head_object(wallet: str, cid: str, oid: str, bearer_token: str="",
         (dict): HEAD response in JSON format
         or
         (str): HEAD response as a plain text
-    '''
+    """
     cmd = (
         f'{NEOFS_CLI_EXEC} --rpc-endpoint {endpoint if endpoint else NEOFS_ENDPOINT} '
         f'--wallet {wallet} --config {WALLET_PASS} '
diff --git a/robot/resources/lib/python_keywords/nodes_management.py b/robot/resources/lib/python_keywords/nodes_management.py
index b5812d7..a671fba 100644
--- a/robot/resources/lib/python_keywords/nodes_management.py
+++ b/robot/resources/lib/python_keywords/nodes_management.py
@@ -8,11 +8,11 @@
 import random
 
 import docker
-
 from robot.api.deco import keyword
 
 ROBOT_AUTO_KEYWORDS = False
 
+
 @keyword('Stop Nodes')
 def stop_nodes(number: int, nodes: list):
     """
diff --git a/robot/resources/lib/python_keywords/payment_neogo.py b/robot/resources/lib/python_keywords/payment_neogo.py
index b704169..41ab5a0 100644
--- a/robot/resources/lib/python_keywords/payment_neogo.py
+++ b/robot/resources/lib/python_keywords/payment_neogo.py
@@ -1,16 +1,15 @@
 #!/usr/bin/python3
 
-import os
-import pexpect
 import re
 
-from robot.api.deco import keyword
-from robot.api import logger
+import pexpect
 from neo3 import wallet
+from robot.api import logger
+from robot.api.deco import keyword
 
-from common import *
-import rpc_client
 import contract
+import rpc_client
+from common import *
 from wrappers import run_sh_with_passwd_contract
 
 ROBOT_AUTO_KEYWORDS = False
@@ -65,20 +64,20 @@ def get_balance(wif: str):
 
     acc = wallet.Account.from_wif(wif, '')
     payload = [
-                {
-                    'type': 'Hash160',
-                    'value': str(acc.script_hash)
-                }
-            ]
+        {
+            'type': 'Hash160',
+            'value': str(acc.script_hash)
+        }
+    ]
     try:
         resp = morph_rpc_cli.invoke_function(
-                contract.get_balance_contract_hash(NEOFS_NEO_API_ENDPOINT),
-                'balanceOf',
-                payload
-            )
+            contract.get_balance_contract_hash(NEOFS_NEO_API_ENDPOINT),
+            'balanceOf',
+            payload
+        )
         logger.info(resp)
         value = int(resp['stack'][0]['value'])
-        return value/(10**MORPH_TOKEN_POWER)
+        return value / (10 ** MORPH_TOKEN_POWER)
     except Exception as e:
         logger.error(f"failed to get {wif} balance: {e}")
         raise e
diff --git a/robot/resources/lib/python_keywords/s3_gate.py b/robot/resources/lib/python_keywords/s3_gate.py
index 94f63c8..a59bf1f 100644
--- a/robot/resources/lib/python_keywords/s3_gate.py
+++ b/robot/resources/lib/python_keywords/s3_gate.py
@@ -6,12 +6,12 @@ import uuid
 
 import boto3
 import botocore
-from cli_helpers import _run_with_passwd
-
-from common import GATE_PUB_KEY, NEOFS_ENDPOINT, S3_GATE
 import urllib3
-from robot.api.deco import keyword
 from robot.api import logger
+from robot.api.deco import keyword
+
+from cli_helpers import _run_with_passwd
+from common import GATE_PUB_KEY, NEOFS_ENDPOINT, S3_GATE
 
 ##########################################################
 # Disabling warnings on self-signed certificate which the
@@ -24,6 +24,7 @@ CREDENTIALS_CREATE_TIMEOUT = '30s'
 
 NEOFS_EXEC = os.getenv('NEOFS_EXEC', 'neofs-authmate')
 
+
 @keyword('Init S3 Credentials')
 def init_s3_credentials(wallet):
     bucket = str(uuid.uuid4())
@@ -71,7 +72,7 @@ def config_s3_client(access_key_id, secret_access_key):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('List objects S3 v2')
@@ -87,7 +88,7 @@ def list_objects_s3_v2(s3_client, bucket):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('List objects S3')
@@ -103,7 +104,7 @@ def list_objects_s3(s3_client, bucket):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Create bucket S3')
@@ -117,7 +118,7 @@ def create_bucket_s3(s3_client):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('List buckets S3')
@@ -134,7 +135,7 @@ def list_buckets_s3(s3_client):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Delete bucket S3')
@@ -147,7 +148,7 @@ def delete_bucket_s3(s3_client, bucket):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Head bucket S3')
@@ -159,7 +160,7 @@ def head_bucket(s3_client, bucket):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Put object S3')
@@ -174,12 +175,11 @@ def put_object_s3(s3_client, bucket, filepath):
         logger.info(f"S3 Put object result: {response}")
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Head object S3')
 def head_object_s3(s3_client, bucket, object_key):
-
     try:
         response = s3_client.head_object(Bucket=bucket, Key=object_key)
         logger.info(f"S3 Head object result: {response}")
@@ -187,7 +187,7 @@ def head_object_s3(s3_client, bucket, object_key):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Delete object S3')
@@ -199,7 +199,7 @@ def delete_object_s3(s3_client, bucket, object_key):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Copy object S3')
@@ -207,14 +207,14 @@ def copy_object_s3(s3_client, bucket, object_key):
     filename = f"{os.getcwd()}/{uuid.uuid4()}"
     try:
         response = s3_client.copy_object(Bucket=bucket,
-                                        CopySource=f"{bucket}/{object_key}",
-                                        Key=filename)
+                                         CopySource=f"{bucket}/{object_key}",
+                                         Key=filename)
         logger.info(f"S3 Copy object result: {response}")
         return filename
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
 
 
 @keyword('Get object S3')
@@ -233,4 +233,4 @@ def get_object_s3(s3_client, bucket, object_key):
 
     except botocore.exceptions.ClientError as err:
         raise Exception(f"Error Message: {err.response['Error']['Message']}\n"
-        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
+                        f"Http status code: {err.response['ResponseMetadata']['HTTPStatusCode']}") from err
diff --git a/robot/resources/lib/python_keywords/session_token.py b/robot/resources/lib/python_keywords/session_token.py
index 624d72b..9ac2c48 100644
--- a/robot/resources/lib/python_keywords/session_token.py
+++ b/robot/resources/lib/python_keywords/session_token.py
@@ -10,12 +10,12 @@ import os
 import uuid
 
 from neo3 import wallet
-from common import WALLET_PASS, ASSETS_DIR
-from cli_helpers import _cmd_run
-import json_transformers
-
-from robot.api.deco import keyword
 from robot.api import logger
+from robot.api.deco import keyword
+
+import json_transformers
+from cli_helpers import _cmd_run
+from common import WALLET_PASS, ASSETS_DIR
 
 ROBOT_AUTO_KEYWORDS = False
 
@@ -24,7 +24,7 @@ NEOFS_CLI_EXEC = os.getenv('NEOFS_CLI_EXEC', 'neofs-cli')
 
 
 @keyword('Generate Session Token')
-def generate_session_token(owner: str, session_wallet: str, cid: str='') -> str:
+def generate_session_token(owner: str, session_wallet: str, cid: str = '') -> str:
     """
         This function generates session token for ContainerSessionContext
         and writes it to the file. It is able to prepare session token file
@@ -47,34 +47,33 @@ def generate_session_token(owner: str, session_wallet: str, cid: str='') -> str:
         session_wlt_content = json.load(fout)
     session_wlt = wallet.Wallet.from_json(session_wlt_content, password="")
     pub_key_64 = base64.b64encode(
-                        bytes.fromhex(
-                            str(session_wlt.accounts[0].public_key)
-                        )
-                    ).decode('utf-8')
+        bytes.fromhex(
+            str(session_wlt.accounts[0].public_key)
+        )
+    ).decode('utf-8')
 
     session_token = {
-                    "body":{
-                        "id":f"{base64.b64encode(uuid.uuid4().bytes).decode('utf-8')}",
-                        "ownerID":{
-                            "value":f"{json_transformers.encode_for_json(owner)}"
-                        },
-                        "lifetime":{
-                            "exp":"100000000",
-                            "nbf":"0",
-                            "iat":"0"
-                        },
-                        "sessionKey":f"{pub_key_64}",
-                        "container":{
-                            "verb":"PUT",
-                            "wildcard": cid != '',
-                            **({ "containerID":
-                                    {"value":
-                                        f"{base64.b64encode(cid.encode('utf-8')).decode('utf-8')}"}
-                                } if cid != '' else {}
-                            )
-                        }
-                    }
-                }
+        "body": {
+            "id": f"{base64.b64encode(uuid.uuid4().bytes).decode('utf-8')}",
+            "ownerID": {
+                "value": f"{json_transformers.encode_for_json(owner)}"
+            },
+            "lifetime": {
+                "exp": "100000000",
+                "nbf": "0",
+                "iat": "0"
+            },
+            "sessionKey": f"{pub_key_64}",
+            "container": {
+                "verb": "PUT",
+                "wildcard": cid != '',
+                **({"containerID":
+                        {"value": f"{base64.b64encode(cid.encode('utf-8')).decode('utf-8')}"}
+                    } if cid != '' else {}
+                   )
+            }
+        }
+    }
 
     logger.info(f"Got this Session Token: {session_token}")
     with open(file_path, 'w', encoding='utf-8') as session_token_file:
@@ -83,7 +82,7 @@ def generate_session_token(owner: str, session_wallet: str, cid: str='') -> str:
     return file_path
 
 
-@keyword ('Sign Session Token')
+@keyword('Sign Session Token')
 def sign_session_token(session_token: str, wlt: str):
     """
         This function signs the session token by the given wallet.
diff --git a/robot/resources/lib/python_keywords/storage_group.py b/robot/resources/lib/python_keywords/storage_group.py
index c82686b..4a079c3 100644
--- a/robot/resources/lib/python_keywords/storage_group.py
+++ b/robot/resources/lib/python_keywords/storage_group.py
@@ -5,16 +5,16 @@
     It contains wrappers for `neofs-cli storagegroup` verbs.
 """
 
-from cli_helpers import _cmd_run
-
-from common import NEOFS_CLI_EXEC, NEOFS_ENDPOINT, WALLET_PASS
 from robot.api.deco import keyword
 
+from cli_helpers import _cmd_run
+from common import NEOFS_CLI_EXEC, NEOFS_ENDPOINT, WALLET_PASS
+
 ROBOT_AUTO_KEYWORDS = False
 
 
 @keyword('Put Storagegroup')
-def put_storagegroup(wallet: str, cid: str, objects: list, bearer_token: str=""):
+def put_storagegroup(wallet: str, cid: str, objects: list, bearer_token: str = ""):
     """
         Wrapper for `neofs-cli storagegroup put`. Before the SG is created,
         neofs-cli performs HEAD on `objects`, so this verb must be allowed
@@ -40,7 +40,7 @@ def put_storagegroup(wallet: str, cid: str, objects: list, bearer_token: str="")
 
 
 @keyword('List Storagegroup')
-def list_storagegroup(wallet: str, cid: str, bearer_token: str=""):
+def list_storagegroup(wallet: str, cid: str, bearer_token: str = ""):
     """
         Wrapper for `neofs-cli storagegroup list`.  This operation
         requires SEARCH allowed for `wallet` in `cid`.
@@ -64,7 +64,7 @@ def list_storagegroup(wallet: str, cid: str, bearer_token: str=""):
 
 
 @keyword('Get Storagegroup')
-def get_storagegroup(wallet: str, cid: str, oid: str, bearer_token: str=''):
+def get_storagegroup(wallet: str, cid: str, oid: str, bearer_token: str = ''):
     """
         Wrapper for `neofs-cli storagegroup get`.
         Args:
@@ -103,7 +103,7 @@ def get_storagegroup(wallet: str, cid: str, oid: str, bearer_token: str=''):
 
 
 @keyword('Delete Storagegroup')
-def delete_storagegroup(wallet: str, cid: str, oid: str, bearer_token: str=""):
+def delete_storagegroup(wallet: str, cid: str, oid: str, bearer_token: str = ""):
     """
         Wrapper for `neofs-cli storagegroup delete`.
         Args:
diff --git a/robot/resources/lib/python_keywords/storage_policy.py b/robot/resources/lib/python_keywords/storage_policy.py
index dd8afd7..a2d91ca 100644
--- a/robot/resources/lib/python_keywords/storage_policy.py
+++ b/robot/resources/lib/python_keywords/storage_policy.py
@@ -5,12 +5,12 @@
     that storage policies are kept.
 '''
 
-from common import NEOFS_NETMAP
+from robot.api import logger
+from robot.api.deco import keyword
+
 import complex_object_actions
 import neofs_verbs
-
-from robot.api.deco import keyword
-from robot.api import logger
+from common import NEOFS_NETMAP
 
 ROBOT_AUTO_KEYWORDS = False
 
@@ -54,8 +54,8 @@ def get_simple_object_copies(wallet: str, cid: str, oid: str):
     for node in NEOFS_NETMAP:
         try:
             response = neofs_verbs.head_object(wallet, cid, oid,
-                                    endpoint=node,
-                                    is_direct=True)
+                                               endpoint=node,
+                                               is_direct=True)
             if response:
                 copies += 1
         except Exception as exc:
@@ -101,8 +101,8 @@ def get_nodes_with_object(wallet: str, cid: str, oid: str):
     for node in NEOFS_NETMAP:
         try:
             res = neofs_verbs.head_object(wallet, cid, oid,
-                            endpoint=node,
-                            is_direct=True)
+                                          endpoint=node,
+                                          is_direct=True)
             if res is not None:
                 nodes_list.append(node)
         except Exception as exc:
@@ -127,8 +127,8 @@ def get_nodes_without_object(wallet: str, cid: str, oid: str):
     nodes_list = []
     for node in NEOFS_NETMAP:
         res = neofs_verbs.head_object(wallet, cid, oid,
-                        endpoint=node,
-                        is_direct=True)
+                                      endpoint=node,
+                                      is_direct=True)
         if res is None:
             nodes_list.append(node)
     return nodes_list
diff --git a/robot/resources/lib/python_keywords/utility_keywords.py b/robot/resources/lib/python_keywords/utility_keywords.py
index 0a77b20..98ed16a 100644
--- a/robot/resources/lib/python_keywords/utility_keywords.py
+++ b/robot/resources/lib/python_keywords/utility_keywords.py
@@ -1,20 +1,21 @@
 #!/usr/bin/python3.8
 
+import hashlib
 import os
 import tarfile
 import uuid
-import hashlib
-import docker
 
-from common import SIMPLE_OBJ_SIZE, ASSETS_DIR
-from cli_helpers import _cmd_run
-from robot.api.deco import keyword
+import docker
 from robot.api import logger
+from robot.api.deco import keyword
 from robot.libraries.BuiltIn import BuiltIn
 
+from cli_helpers import _cmd_run
+from common import SIMPLE_OBJ_SIZE, ASSETS_DIR
 
 ROBOT_AUTO_KEYWORDS = False
 
+
 @keyword('Generate file')
 def generate_file_and_file_hash(size: int) -> str:
     """
@@ -60,15 +61,16 @@ def get_container_logs(testcase_name: str) -> None:
         container_name = container['Names'][0][1:]
         if client.inspect_container(container_name)['Config']['Domainname'] == "neofs.devenv":
             file_name = f"{logs_dir}/docker_log_{container_name}"
-            with open(file_name,'wb') as out:
+            with open(file_name, 'wb') as out:
                 out.write(client.logs(container_name))
             logger.info(f"Collected logs from container {container_name}")
             tar.add(file_name)
             os.remove(file_name)
     tar.close()
 
+
 @keyword('Make Up')
-def make_up(services: list=[], config_dict: dict={}):
+def make_up(services: list = [], config_dict: dict = {}):
     test_path = os.getcwd()
     dev_path = os.getenv('DEVENV_PATH', '../neofs-dev-env')
     os.chdir(dev_path)
@@ -87,8 +89,9 @@ def make_up(services: list=[], config_dict: dict={}):
 
     os.chdir(test_path)
 
+
 @keyword('Make Down')
-def make_down(services: list=[]):
+def make_down(services: list = []):
     test_path = os.getcwd()
     dev_path = os.getenv('DEVENV_PATH', '../neofs-dev-env')
     os.chdir(dev_path)
diff --git a/robot/variables/common.py b/robot/variables/common.py
index 3f079e5..4605450 100644
--- a/robot/variables/common.py
+++ b/robot/variables/common.py
@@ -1,7 +1,7 @@
 import os
 
-ROOT='../..'
-CERT="%s/../../ca" % ROOT
+ROOT = '../..'
+CERT = "%s/../../ca" % ROOT
 
 # Common NeoFS variables can be declared from neofs-dev-env env variables.
 # High priority is accepted for those envs.
@@ -9,7 +9,7 @@ CERT="%s/../../ca" % ROOT
 CONTAINER_WAIT_INTERVAL = "1m"
 
 NEOFS_EPOCH_TIMEOUT = (os.getenv("NEOFS_EPOCH_TIMEOUT") if os.getenv("NEOFS_EPOCH_TIMEOUT")
-                  else os.getenv("NEOFS_IR_TIMERS_EPOCH", "300s"))
+                       else os.getenv("NEOFS_IR_TIMERS_EPOCH", "300s"))
 
 SIMPLE_OBJ_SIZE = 1000
 COMPLEX_OBJ_SIZE = 2000
@@ -19,7 +19,7 @@ MAINNET_TIMEOUT = os.getenv('MAINNET_TIMEOUT', "1min")
 MORPH_BLOCK_TIME = os.getenv("MORPH_BLOCK_TIME", '1s')
 NEOFS_CONTRACT_CACHE_TIMEOUT = os.getenv("NEOFS_CONTRACT_CACHE_TIMEOUT", "30s")
 
-#TODO: change to NEOFS_STORAGE_DEFAULT_GC_REMOVER_SLEEP_INTERVAL
+# TODO: change to NEOFS_STORAGE_DEFAULT_GC_REMOVER_SLEEP_INTERVAL
 
 SHARD_0_GC_SLEEP = os.getenv("NEOFS_STORAGE_SHARD_0_GC_REMOVER_SLEEP_INTERVAL", "1m")
 
@@ -37,32 +37,37 @@ S3_GATE = os.getenv("S3_GATE", 'https://s3.neofs.devenv:8080')
 GAS_HASH = '0xd2a4cff31913016155e38e474a2c06d08be276cf'
 
 NEOFS_CONTRACT = (os.getenv("NEOFS_CONTRACT") if os.getenv("NEOFS_CONTRACT")
-             else os.getenv("NEOFS_IR_CONTRACTS_NEOFS", '008b43d3de8741b896015f79ac0fbfa4055b4574'))
+                  else os.getenv("NEOFS_IR_CONTRACTS_NEOFS", '008b43d3de8741b896015f79ac0fbfa4055b4574'))
 
 COMMON_PLACEMENT_RULE = "REP 2 IN X CBF 1 SELECT 4 FROM * AS X"
 
 ASSETS_DIR = os.getenv("ASSETS_DIR", "TemporaryDir/")
 
-MORPH_MAGIC = os.environ["MORPH_MAGIC"]
+MORPH_MAGIC = os.getenv("MORPH_MAGIC")
 GATE_PUB_KEY = '0313b1ac3a8076e155a7e797b24f0b650cccad5941ea59d7cfd51a024a8b2a06bf'
 
-NEOFS_NETMAP_DICT = {'s01': {'rpc': 's01.neofs.devenv:8080',
-                        'control': 's01.neofs.devenv:8081',
-                        'wif': 'Kwk6k2eC3L3QuPvD8aiaNyoSXgQ2YL1bwS5CP1oKoA9waeAze97s',
-                        'UN-LOCODE': 'RU MOW'},
-                    's02': {'rpc': 's02.neofs.devenv:8080',
-                        'control': 's02.neofs.devenv:8081',
-                        'wif': 'L1NdHdnrTNGQZH1fJSrdUZJyeYFHvaQSSHZHxhK3udiGFdr5YaZ6',
-                        'UN-LOCODE': 'RU LED'},
-                    's03': {'rpc': 's03.neofs.devenv:8080',
-                        'control': 's03.neofs.devenv:8081',
-                        'wif': 'KzN38k39af6ACWJjK8YrnARWo86ddcc1EuBWz7xFEdcELcP3ZTym',
-                        'UN-LOCODE': 'SE STO'},
-                    's04': {'rpc': 's04.neofs.devenv:8080',
-                        'control': 's04.neofs.devenv:8081',
-                        'wif': 'Kzk1Z3dowAqfNyjqeYKWenZMduFV3NAKgXg9K1sA4jRKYxEc8HEW',
-                        'UN-LOCODE': 'FI HEL'}
-                    }
+STORAGE_NODE_1 = os.getenv('DATA_NODE_1', 's01.neofs.devenv:8080')
+STORAGE_NODE_2 = os.getenv('DATA_NODE_2', 's02.neofs.devenv:8080')
+STORAGE_NODE_3 = os.getenv('DATA_NODE_3', 's03.neofs.devenv:8080')
+STORAGE_NODE_4 = os.getenv('DATA_NODE_4', 's04.neofs.devenv:8080')
+
+NEOFS_NETMAP_DICT = {'s01': {'rpc': STORAGE_NODE_1,
+                             'control': 's01.neofs.devenv:8081',
+                             'wif': 'Kwk6k2eC3L3QuPvD8aiaNyoSXgQ2YL1bwS5CP1oKoA9waeAze97s',
+                             'UN-LOCODE': 'RU MOW'},
+                     's02': {'rpc': STORAGE_NODE_2,
+                             'control': 's02.neofs.devenv:8081',
+                             'wif': 'L1NdHdnrTNGQZH1fJSrdUZJyeYFHvaQSSHZHxhK3udiGFdr5YaZ6',
+                             'UN-LOCODE': 'RU LED'},
+                     's03': {'rpc': STORAGE_NODE_3,
+                             'control': 's03.neofs.devenv:8081',
+                             'wif': 'KzN38k39af6ACWJjK8YrnARWo86ddcc1EuBWz7xFEdcELcP3ZTym',
+                             'UN-LOCODE': 'SE STO'},
+                     's04': {'rpc': STORAGE_NODE_4,
+                             'control': 's04.neofs.devenv:8081',
+                             'wif': 'Kzk1Z3dowAqfNyjqeYKWenZMduFV3NAKgXg9K1sA4jRKYxEc8HEW',
+                             'UN-LOCODE': 'FI HEL'}
+                     }
 NEOFS_NETMAP = [i['rpc'] for i in NEOFS_NETMAP_DICT.values()]
 NEOGO_EXECUTABLE = os.getenv('NEOGO_EXECUTABLE', 'neo-go')
 NEOFS_CLI_EXEC = os.getenv('NEOFS_CLI_EXEC', 'neofs-cli')
diff --git a/robot/variables/wellknown_acl.py b/robot/variables/wellknown_acl.py
index 256851e..7bcbe82 100644
--- a/robot/variables/wellknown_acl.py
+++ b/robot/variables/wellknown_acl.py
@@ -1,9 +1,9 @@
 # ACLs with set F flag
-PUBLIC_ACL_F =  "0x1FBFBFFF"
+PUBLIC_ACL_F = "0x1FBFBFFF"
 PRIVATE_ACL_F = "0x1C8C8CCC"
 READONLY_ACL_F = "0x1FBF8CFF"
 
 # ACLs without F flag set
-PUBLIC_ACL =  "0x0FBFBFFF"
+PUBLIC_ACL = "0x0FBFBFFF"
 INACCESSIBLE_ACL = "0x40000000"
 STICKYBIT_PUB_ACL = "0x3FFFFFFF"