Python Cash Flow Analysis Automation

I have a set of financial spreadsheets that need to be turned into a clear-cut cash-flow story. My plan is to feed the raw Excel files into a Python workflow, run the calculations, and then drop the refreshed figures straight back into an easy-to-read Office report.

Here’s what I’m looking for:
• A clean Python script that imports my existing .xlsx files, handles date and currency formats gracefully, and calculates operating, investing, and financing cash flows.
• An Excel workbook returned with the results mapped to tidy tables and a couple of straightforward charts—nothing fancy, just something management can glance at and understand.
• A brief read-me or comments inside the code so I can extend the analysis later if new accounts appear.

If you’re comfortable blending pandas, openpyxl (or similar) with native Excel functions, this should be a quick turnaround. Accuracy in the calculations is the only deal-breaker; the formatting can stay simple. Let me know your timeline and any clarifying questions, and we’ll get rolling.