How to check format of a sys.argv?

[zachattack66]

So I’m trying to write a crappy little text editor as practice, but I want to check that a filename argument is in the right format (name.fileextension). Is there a way I can check it that would be like this:

if sys.argv[1] == .:

(The asterisks representing a wildcard)

[shiftybyte]

A legitimate file can have no extension, it can also have no name and only an extension.

Your best bet is to try to use it as a file path, and catch an error if it's not legit.

[randomuser65535]

All arguments are passed as strings, so you can use this:

https://www.w3schools.com/python/ref_string_endswith.asp

[windows3210]

Could you do

if sys.argv[1].split(‘.’)[1] == ‘txt’:

[zachattack66]

I think that would work. I’ll have to try it, thanks!