Automate PO Creation with Python

I need a Python script to automate purchase order creation on the DMS portal using data from an Excel file.

Requirements:
- Web automation with Selenium
- Data processing with Pandas or openpyxl
- Handle variable Excel column structure
- Use a provided mapping template for column mapping

Ideal Skills:
- Proficiency in Python
- Experience with Selenium, Pandas, or openpyxl
- Familiarity with web automation and data handling
- Ability to adapt to varying data structures

Please ensure the script logs in with username and password, navigates the portal, fills out, and submits the purchase order forms.