Trying to write script, that would download all subfolders inside folder

so I'm here again with my handsome script, that should download data from my second computer using TCP sockets. I've got a couple of questions, that I was not able to find on google.

Question n.1: First of all, is there a way, to check if a string is ending without extension? I found, that I can use .endswith(), but it doesn't work the way I would like to, because I would have to define every extension that exists in the World, and that wouldn't be so practical.

EDIT: I just found the solution for that second question, right away when I was reading this post.

Solution

To deal with filenames in a cross-platform way, you should use the os module. Getting the extension from a filename is supported by the os.path.splitext function:

# '.file' extension
filepath = "this/is/a.file"
_, ext = os.path.splitext(filepath)
print(len(ext))

# No extension
filepath = "this/is/afile"
_, ext = os.path.splitext(filepath)
print(len(ext))

will output:

5
0

5 for the extension of .file and 0 for there not being an extension. Thus you can check if a filename has an extension with a function like:

def has_ext(filepath):
    _, ext = os.path.splitext(filepath)
    return len(ext) > 0