Count number of files with certain extension in Python

Question

I am fairly new to Python and I am trying to figure out the most efficient way to count the number of .TIF files in a particular sub-directory.

Doing some searching,

Answer 1

Your code is fine.

Yes, you're going to need to loop over those files to filter out the .tif files, but looping over a small in-memory array is negligible compared to the work of scanning the file directory to find these files in the first place, which you have to do anyway.

I wouldn't worry about optimizing this code.