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+# Script Documentation
+
+## Overview
+
+This script processes two Excel files (
+
+reinoud.xlsx
+
+and
+
+sisa.xlsx
+
+) to find and append missing IDs from
+
+sisa.xlsx
+
+to
+
+reinoud.xlsx
+
+. It also checks for duplicate IDs in
+
+reinoud.xlsx
+
+.
+
+## Functions
+
+### [`load_excel(file_path: str, sheet_name: Optional[str] = None) -> pd.DataFrame`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A7%2C%22character%22%3A4%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition")
+
+Loads an Excel file into a DataFrame.
+
+### [`check_duplicates(df: pd.DataFrame, column: str) -> List[str]`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A21%2C%22character%22%3A4%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition")
+
+Checks for duplicate values in a specified column.
+
+### [`find_missing_ids(df1: pd.DataFrame, df2: pd.DataFrame, column: str) -> List[str]`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A26%2C%22character%22%3A4%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition")
+
+Finds IDs in [`df2`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A26%2C%22character%22%3A40%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition") that are not in [`df1`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A26%2C%22character%22%3A21%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition").
+
+### [`append_missing_ids(reinoud_df: pd.DataFrame, sisa_df: pd.DataFrame, column: str, reinoud_file: str) -> pd.DataFrame`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A33%2C%22character%22%3A4%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition")
+
+Appends missing IDs and corresponding details from [`sisa_df`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A33%2C%22character%22%3A49%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition") to [`reinoud_df`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A33%2C%22character%22%3A23%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition").
+
+### [`main(reinoud_file: str, sisa_file: str, column: str, reinoud_sheet: Optional[str] = None, sisa_sheet: Optional[str] = None)`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A55%2C%22character%22%3A4%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition")
+
+Main function to load the Excel files, check for duplicates, append missing IDs, and save the updated DataFrame back to the Excel file.
+
+## Usage
+
+Run the script with the following command:
+
+```sh
+python script.py
+```
+
+Example usage within the script:
+
+```python
+if __name__ == "__main__":
+    main('reinoud.xlsx', 'sisa.xlsx', 'Rolnummer', reinoud_sheet='Actief', sisa_sheet='sheet1')
+```
+
+## Logging
+
+The script uses the [`logging`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A1%2C%22character%22%3A7%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition") module to log information and errors. The log level is set to [`INFO`](command:_github.copilot.openSymbolFromReferences?%5B%22%22%2C%5B%7B%22uri%22%3A%7B%22scheme%22%3A%22file%22%2C%22authority%22%3A%22%22%2C%22path%22%3A%22%2Fc%3A%2FUsers%2Fbrech%2FDocuments%2FlocalReps%2Fows-mentoraat%2Fscript.py%22%2C%22query%22%3A%22%22%2C%22fragment%22%3A%22%22%7D%2C%22pos%22%3A%7B%22line%22%3A5%2C%22character%22%3A34%7D%7D%5D%2C%22723f84da-7613-47af-a432-459fba37ba55%22%5D "Go to definition").
+
+## File Structure
+
+```
+.gitignore
+reinoud.xlsx
+script.py
+sisa.xlsx
+```
+
+## Dependencies
+
+- pandas
+- logging
+
+Install dependencies using:
+
+```sh
+pip install pandas
+```
+
+## License
+
+This script is provided "as-is" without any warranty. Use at your own risk.