Iterating on files named with dates in chronological order

Question

I have a directory containing files named like so:

2018-07-14
2018-07-12
2018-07-17

Right now I am iterating over all those files like so:

from pathlib import Path

def data_generator(my_dir):
    data_path = Path(my_dir)
    for path in data_path.iterdir():
        print(path)

Is there a simple to make sure I iterate on the files in order using their name as key, from oldest to most recent?

using ISO date format lets you sort by date using lexicographic string sorting provided your format (and timezone) are consistent — Aaron, Mar 07 '19 at 19:18
Possible duplicate of [How do you get a directory listing sorted by creation date in python?](https://stackoverflow.com/questions/168409/how-do-you-get-a-directory-listing-sorted-by-creation-date-in-python) — user1251007, Mar 07 '19 at 19:34

score 3 · Accepted Answer · edited Mar 07 '19 at 19:19

3

You can enclose data_path.iterdir() with a sorted() function.

from pathlib import Path

def data_generator(my_dir):
    data_path = Path(my_dir)
    for path in sorted(data_path.iterdir()):
        print(path)

edited Mar 07 '19 at 19:19

martineau

answered Mar 07 '19 at 19:13

VietHTran

1 Answers1