Python Automation Tool for Vendor Websites

I'm in need of an experienced freelancer to develop a Python-based automation tool for specific vendor websites. The tool should perform the following functions:

- Automatically log into various vendor websites using provided credentials
- Download product price and quantity update files

Key points to consider:
- The tool should be developed using Python
- It needs to be designed to automatically detect and adjust to updates on the vendor websites that could affect the login process or file downloading

The ideal freelancer for this project should have:
- Proven experience in developing automation tools
- Proficiency in Python programming
- Familiarity with web scraping and automation techniques
- Ability to implement automatic detection and adjustment mechanisms in the tool

Please note that the tool should be user-friendly and well-documented for future maintenance and updates.