Pandas XML Reader and Writer Class

[JoJo10Smith]

This pull request adds XML read and write functionality for ticket #352

Changes

This code adds the functionality to read and write using the Pandas XML functions to Hamilton.
read_xml: https://pandas.pydata.org/docs/reference/api/pandas.read_xml.html
to_xml: https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_xml.html

The changes to the files are as described below:

pandas_extensions.py: Added the functions to read and write XML files
my_script.py: Added the example of XML materialization and optional to add Hamilton to PATH with directory
notebook.ipynb: Added the example of XML materialization and optional to add Hamilton to PATH with directory
requirements-test.txt: Added the module lxml since it is a requirement for the parser argument when reading XML files
test_pandas_extensions.py: Added test cases for the read_xml and to_xml functions that are called PandasXmlReader and PandasXmlWriter respectively
test_load_from_data.xml: A simple XML file with example data to test functionality

How I tested this

I used the pre-commit package and all tests passed before committing, there is also the circleci tests. A screenshot of the most recent commit is below:

pre-commit:

Notes

Checklist

• PR has an informative and human-readable title (this will be pulled into the release notes)
• Changes are limited to a single goal (no scope creep)
• Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future TODOs are captured in comments
• Project documentation has been updated if adding/changing functionality.

[JoJo10Smith]

@skrawcz I managed to get the my_script.py file to work and produced the following output. I'm still struggling with the Jupyter Notebook but have shown that the code works, just need to add the example in the notebook.

[skrawcz]

@skrawcz I managed to get the my_script.py file to work and produced the following output. I'm still struggling with the Jupyter Notebook but have shown that the code works, just need to add the example in the notebook.

Why don't you join Hamilton slack and ping me -- happy to find 15 mins this week to help.