Loop through all files in a directory?

[Pedroski55]

I agree with Dead_EyE, Path is very useful, because it will work for different operating systems and it has other tricks up its sleeve!

if filename.is_file() means you won't pick up directories or their contents.

from pathlib import Path
import sys 
 
# mydir looks like: PosixPath('/home/pedro/temp')
mydir = Path('/home/pedro/temp')
# create a generator: filelist <generator object <genexpr> at 0x7ad729970900>
filelist = (filename for filename in mydir.iterdir() if filename.is_file())
# create a list of files
file_list = [filename for filename in mydir.iterdir() if filename.is_file()]

# have a look at the files
for f in filelist:
    print(f)

# use Path to look at the files
# need to recreate the generator
filelist = (filename for filename in mydir.iterdir() if filename.is_file())

for filename in filelist:
    print(f"\nfilename: {filename.name}")
    print(f"file suffix: {filename.suffix}")
    print(f"full path: {filename.resolve()}")
    print(f"filepath parts: {filename.parts}")

The advantage of the generator is size. Imagine you had millions of files. The list would be very big in memory. The generator is tiny!

sys.getsizeof(filelist) # returns 104
sys.getsizeof(file_list) # returns 472 nearly 5 times bigger than filelist