Most convenient way of regex searching recursively for files in python

def find_files(directory, pattern):
for root, dirs, files in os.walk(directory):
for basename in files:
if fnmatch.fnmatch(basename.lower(), pattern):
filename = os.path.join(root, basename)
yield filename

Its copied from stackoverflow, but it shows a really good example on when to use yield. Basically it returns a generator and thats far more memory efficient than returning a list.


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