Michaelberk/add style to contributing guide (mlflow#9907)

Signed-off-by: mberk06 <[email protected]>
Signed-off-by: Michael Berk <[email protected]>
Co-authored-by: Michael Berk <[email protected]>

Author: michael-berk

CONTRIBUTING.md

@@ -11,6 +11,7 @@ We welcome community contributions to MLflow. This page provides useful informat
   - [Write designs for significant changes](#write-designs-for-significant-changes)
   - [Make changes backwards compatible](#make-changes-backwards-compatible)
   - [Consider introducing new features as MLflow Plugins](#consider-introducing-new-features-as-mlflow-plugins)
+  - [Python Style Guide](#python-style-guide)
 - [Setting up the repository](#setting-up-the-repository)
 - [Developing and testing MLflow](#developing-and-testing-mlflow)
   - [Environment Setup and Python configuration](#environment-setup-and-python-configuration)
@@ -180,6 +181,35 @@ base](https://github.com/mlflow/mlflow/blob/cdc6a651d5af0f29bd448d2c87a198cf5d32
 For more information about Plugins, see
 <https://mlflow.org/docs/latest/plugins.html>.
 
+### Python Style Guide
+
+##### Docstrings
+
+We follow [Google's Python Style Guide](https://google.github.io/styleguide/pyguide.html)
+for writing docstrings. Make sure your docstrings adhere to this style
+guide.
+
+The process for converting to a standard docstring format style is  
+ongoing. If you see a docstring in the code base that doesn't adhere
+to this formatting style and you'd like to contribute a fix, feel free
+to open a PR to correct the docstring formatting.
+
+###### Code Style
+
+We use [pylint](https://pypi.org/project/pylint/),
+[black](https://black.readthedocs.io/en/stable/the_black_code_style/index.html),
+and [ruff](https://github.com/astral-sh/ruff) in our CI via
+pre-commit Git hooks. If your code passes the CI checks, it's
+formatted correctly.
+
+To validate that your local versions of the above libraries
+match those in the mlflow CI, refer to [lint-requirements.txt](https://github.com/mlflow/mlflow/blob/master/requirements/lint-requirements.txt).
+You can compare these versions with your local using pip:
+
+```bash
+pip show pylint
+```
+
 ## Setting up the repository
 
 To set up the MLflow repository, run the following commands: