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

CalculateUntilAsyncQueriesDone() will hold the program and wait until the refresh has completed.

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