Get top level directory within the zipfile

I have the following structure within a zipped file "test.zip"

There are multiple top level folders like JOU=00336,JOU=00337 etc.

I want to count the top level folders.

I have the following code which gives me a count of all XML files zipped in test.zip.

        with ZipFile("test.zip", "r") as f:
            print(len(f.namelist()))

Not sure how to count just the top level folders

Solution

You can split the paths to get the first element in them, and count those unique ones with a set:

top = {item.split('/')[0] for item in f.namelist()}
print(len(top))