I manipulate an existing pptx file with python-pptx. Somehow I can't save my changes in the file. The manipulation works out well. To give an example: I can change the values in a table and when I read out the table I receive the new values. At the end of my script I use the "normal " prs.save(path) (with prs being an Presentation and path the directory and name of the file). I Do not receive an error message. Anyhow, the changes are not saved. Anyone an idea about the reason for this strange behavior?
path = r'/Users/mysel/Documents/test.pptx'
prs = Presentation(path)
# Some manipulation of the document
prs.save(path)