Refresh Excel External Data with Python

Question

I have an Excel file that I run a Python script on. The Excel file has external data connections that need to be refreshed before the Python script is run. The functionality

Answer 1

Adding on top of what everyone else has said, I kept getting the save dialog again when the code got to the Quit line. I set the DisplayAlerts flag to false and it fixed my issue. I didn't need the sleep timer either. This is what worked for me:

xlapp = win32com.client.DispatchEx("Excel.Application")
wb = xlapp.Workbooks.Open()
wb.RefreshAll()
xlapp.CalculateUntilAsyncQueriesDone()
xlapp.DisplayAlerts = False
wb.Save()
xlapp.Quit()