Add black formatter and isort into a precommit hook

Signed-off-by: Vladimir Domnich <v.domnich@yadro.com>

.pre-commit-config.yaml

@@ -0,0 +1,11 @@
+repos:
+  - repo: https://github.com/psf/black
+    rev: 22.8.0
+    hooks:
+      - id: black
+        language_version: python3.9
+  - repo: https://github.com/pycqa/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+        name: isort (python)

README.md

@@ -52,26 +52,34 @@ libssl-dev
 As we use neofs-dev-env, you'll also need to install
 [prerequisites](https://github.com/nspcc-dev/neofs-dev-env#prerequisites) of this repository.
 
-### Run and get report
+6. Prepare virtualenv
 
-1. Prepare virtualenv
-
-```
+```shell
 $ make venv.local-pytest
 $ . venv.local-pytest/bin/activate
 ```
 
-2. Install Allure CLI
+7. Setup pre-commit hooks to run code formatters on staged files before you run a `git commit` command:
+
+```shell
+$ pre-commit install
+```
+
+Optionally you might want to integrate code formatters with your code editor to apply formatters to code files as you go:
+* isort is supported by [PyCharm](https://plugins.jetbrains.com/plugin/15434-isortconnect), [VS Code](https://cereblanco.medium.com/setup-black-and-isort-in-vscode-514804590bf9). Plugins exist for other IDEs/editors as well.
+* black can be integrated with multiple editors, please, instructions are available [here](https://black.readthedocs.io/en/stable/integrations/editors.html).
+
+8. Install Allure CLI
 
 Allure CLI installation is not an easy task, so a better option might be to run allure from
-docker container (please, refer to p.4 of this section for instructions).
+docker container (please, refer to p.2 of the next section for instructions).
 
-To install Allure CLI you may select one of the following ways:
+To install Allure CLI you may take one of the following ways:
 
 - Follow the [instruction](https://docs.qameta.io/allure/#_linux) from the official website
 - Consult [the thread](https://github.com/allure-framework/allure2/issues/989)
 - Download release from the Github
-```
+```shell
 $ wget https://github.com/allure-framework/allure2/releases/download/2.18.1/allure_2.18.1-1_all.deb
 $ sudo apt install ./allure_2.18.1-1_all.deb
 ```
@@ -79,35 +87,37 @@ You also need the `default-jre` package installed.
 
 If none of the options worked for you, please complete the instruction with your approach.
 
-3. Run tests
+### Run and get report
 
-In the activated virtualenv, execute the following command(s) to run a singular testsuite or all the suites in the directory
-```
+1. Run tests
+
+Make sure that the virtualenv is activated, then execute the following command to run a singular test suite or all the suites in the directory
+```shell
 $ pytest --alluredir my-allure-123 pytest_tests/testsuites/object/test_object_api.py
 $ pytest --alluredir my-allure-123 pytest_tests/testsuites/
 ```
 
-4. Generate report
+2. Generate report
 
 If you opted to install Allure CLI, you can generate a report using the command `allure generate`. The web representation of the report will be under `allure-report` directory:
-```
+```shell
 $ allure generate my-allure-123
 $ ls allure-report/
 app.js  data  export  favicon.ico  history  index.html  plugins  styles.css  widgets
 ```
 
 To inspect the report in a browser, run
-```
+```shell
 $ allure serve my-allure-123
 ```
 
 If you prefer to run allure from Docker, you can use the following command:
-```
-mkdir -p $PWD/allure-reports
-docker run -p 5050:5050 -e CHECK_RESULTS_EVERY_SECONDS=30 -e KEEP_HISTORY=1 \
-  -v $PWD/my-allure-123:/app/allure-results \
-  -v $PWD/allure-reports:/app/default-reports \
-  frankescobar/allure-docker-service
+```shell
+$ mkdir -p $PWD/allure-reports 
+$ docker run -p 5050:5050 -e CHECK_RESULTS_EVERY_SECONDS=30 -e KEEP_HISTORY=1 \
+    -v $PWD/my-allure-123:/app/allure-results \
+    -v $PWD/allure-reports:/app/default-reports \
+    frankescobar/allure-docker-service
 ```
 
 Then, you can check the allure report in your browser [by this link](http://localhost:5050/allure-docker-service/projects/default/reports/latest/index.html?redirect=false)

pyproject.toml

@@ -0,0 +1,8 @@
+[tool.isort]
+profile = "black"
+src_paths = ["reporter", "shell", "tests"]
+line_length = 100
+
+[tool.black]
+line-length = 100
+target-version = ["py39"]

pytest_tests/requirements.txt

@@ -8,6 +8,7 @@ asynctest==0.13.0
 attrs==21.4.0
 base58==2.1.0
 bitarray==2.3.4
+black==22.8.0
 boto3==1.16.33
 botocore==1.19.33
 certifi==2022.5.18
@@ -37,8 +38,10 @@ neo3vm-stubs==0.9.0
 netaddr==0.8.0
 orjson==3.6.8
 packaging==21.3
+paramiko==2.10.3
 pexpect==4.8.0
 pluggy==1.0.0
+pre-commit==2.20.0
 ptyprocess==0.7.0
 py==1.11.0
 pybiginteger==1.2.6
@@ -61,4 +64,3 @@ typing-extensions==4.2.0
 urllib3==1.26.9
 websocket-client==1.3.2
 yarl==1.7.2
-paramiko==2.10.3