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

If you do need to search recursively, or for some other reason don't want to use the glob module, you could use

file_count = sum(len(f for f in fs if f.lower().endswith('.tif')) for _, _, fs in os.walk(myPath))

This is the "Pythonic" way to adapt the example you found for your purposes. But it's not going to be significantly faster or more efficient than the loop you've been using; it's just a really compact syntax for more or less the same thing.