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Linting the Guidelines

The code presented in this repository is a lift-and-shift of code originally written by @kristapratico

Running guidelines checks in Azure/azure-sdk-for-python repository

In order to lint for the guidelines, you must make sure you are enabling the pylint-guidelines-checker in your pylint invocation. Using the rcfile at the root of the repo will ensure that the plugin is properly activated

It is recommended you run pylint at the library package level to be consistent with how the CI runs pylint.

Check that you are running pylint version >=2.14.5 and astroid version >=2.12.0.

  1. Install the pylint checker from the azure-sdk development feed.

    pip install --index-url="https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-python/pypi/simple/" pylint-guidelines-checker
    
  2. Run pylint at the root of the repo and it will automatically find the pylintrc:

    C:\azure-sdk-for-python>pylint sdk/storage/azure-storage-blob/azure
    
  3. Add the --rcfile command line argument with a relative path to the pylintrc from your current directory:

    C:\azure-sdk-for-python\sdk\storage>pylint --rcfile="../../pylintrc" azure-storage-blob
    
  4. Set the environment variable PYLINTRC to the absolute path of the pylintrc file:

    set PYLINTRC=C:\azure-sdk-for-python\pylintrc
    

    Run pylint:

    C:\azure-sdk-for-python\sdk\storage>pylint azure-storage-blob
    
  5. Run pylint at the package level using tox and it will find the pylintrc file:

    pip install tox tox-monorepo
    C:\azure-sdk-for-python\sdk\storage\azure-storage-blob>tox -e lint -c ../../../eng/tox/tox.ini
    
  6. If you use the pylint extension for VS code or Pycharm it should find the pylintrc automatically.

How to disable a pylint error

# pylint:disable=connection-string-should-not-be-constructor-param

The pylint custom checkers for SDK guidelines fall into messages range C4717 - C4738. You will know you came across a custom checker if it contains a link to the guidelines.

In the case of a false positive, use the disable command to remove the pylint error.

Rules List

Pylint checker name How to fix this How to disable this rule Link to python guideline
client-method-should-not-use-static-method Use module level functions instead. # pylint:disable=client-method-should-not-use-static-method link
missing-client-constructor-parameter-credential Add a credential parameter to the client constructor. Do not use plural form "credentials". # pylint:disable=missing-client-constructor-parameter-credential link
missing-client-constructor-parameter-kwargs Add a **kwargs parameter to the client constructor. # pylint:disable=missing-client-constructor-parameter-kwargs link
client-method-has-more-than-5-positional-arguments Use keyword arguments to reduce number of positional arguments. # pylint:disable=client-method-has-more-than-5-positional-arguments link
client-method-missing-type-annotations Check that param/return type comments are present or that param/return type annotations are present. Check that you did not mix type comments with type annotations. # pylint:disable=client-method-missing-type-annotations link
client-incorrect-naming-convention Check that you use... snake_case for variable, function, and method names. Pascal case for types. ALL CAPS for constants. # pylint:disable=client-incorrect-naming-convention link
client-method-missing-kwargs Check that any methods that make network calls have a **kwargs parameter. # pylint:disable=client-method-missing-kwargs link
config-missing-kwargs-in-policy Check that the policies in your configuration function contain a **kwargs parameter. # pylint:disable=config-missing-kwargs-in-policy link
async-client-bad-name Remove "Async" from your service client's name. # pylint:disable=async-client-bad-name link
file-needs-copyright-header Add a copyright header to the top of your file. # pylint:disable=file-needs-copyright-header link
client-method-name-no-double-underscore Don't use method names prefixed with "__". # pylint:disable=client-method-name-no-double-underscore link
specify-parameter-names-in-call Specify the parameter names when calling methods with more than 2 required positional parameters. e.g. self.get_foo(one, two, three=three, four=four, five=five) # pylint:disable=specify-parameter-names-in-call link
connection-string-should-not-be-constructor-param Remove connection string parameter from client constructor. Create a method that creates the client using a connection string. # pylint:disable=connection-string-should-not-be-constructor-param link
package-name-incorrect Change your distribution package name to only include dashes, e.g. azure-storage-file-share # pylint:disable=package-name-incorrect link
client-suffix-needed Service client types should use a "Client" suffix, e.g. BlobClient. # pylint:disable=client-suffix-needed link
docstring-admonition-needs-newline Add a blank newline above the .. literalinclude statement. # pylint:disable=docstring-admonition-needs-newline No guideline, just helps our docs get built correctly for microsoft docs.
naming-mismatch Do not alias models imported from the generated code. # pylint:disable=naming-mismatch link
client-accepts-api-version-keyword Ensure that the client constructor accepts a keyword-only api_version argument. # pylint:disable=client-accepts-api-version-keyword link
enum-must-be-uppercase The enum name must be all uppercase. # pylint:disable=enum-must-be-uppercase link
enum-must-inherit-case-insensitive-enum-meta The enum should inherit from CaseInsensitiveEnumMeta. # pylint:disable=enum-must-inherit-case-insensitive-enum-meta link
networking-import-outside-azure-core-transport This import is only allowed in azure.core.pipeline.transport. # pylint:disable=networking-import-outside-azure-core-transport link
non-abstract-transport-import Only import abstract transports. Let core or end-user decide which transport to use. # pylint:disable=non-abstract-transport-import link
no-raise-with-traceback Check that raise_with_traceback from azure-core is replaced with python 3 'raise from' syntax. # pylint:disable=no-raise-with-traceback link
name-too-long Check that the length of class names, function names, and variable names are under 40 characters. # pylint:disable=name-too-long link
delete-operation-wrong-return-type Check that delete* or begin_delete* methods return None or LROPoller[None]. # pylint:disable=delete-operation-wrong-return-type link
client-method-missing-tracing-decorator pylint:disable=client-method-missing-tracing-decorator Check that sync client methods that make network calls have the sync distributed tracing decorator. link
client-method-missing-tracing-decorator-async pylint:disable=client-method-missing-tracing-decorator-async Check that async client methods that make network calls have the async distributed tracing decorator. link

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