🫰 Thanks for your Pull Request! Here are some helpful tips:

👀 Purpose and Importance of this PR:

• My code conforms to the coding style of this project.
• My code requires changes to the documentation.
• I have updated the documentation accordingly.
• All tests have passed.

🅰 Fixes for Issues:

Fixes 解析Excel并支持多种输出格式#5

📝 Notes for the Reviewer:

This PR adds the ExcelConverter class in excel_parser.py for parsing and converting Excel files to JSON. It also includes the remove_keys_from_json function in json_validator.py to remove specified keys from JSON strings. Additionally, unit tests for these functionalities are provided in test_file_processing.py.

🎯 How to Verify this PR:

• In the project root directory, run the following command to execute the unit tests and verify the functionality of ExcelConverter and remove_keys_from_json:

  python -m unittest discover -s tests

• Ensure the provided sample Excel file and JSON strings match the expected output.

📑 Additional Documentation, e.g., KEPs (Enhancement Proposals), Usage Docs, etc.:

No additional documentation required.