Generators

generators.py

import glob
import pathlib


def match_paths_1(pattern):
    # not a generator function
    return (pathlib.Path(path) for path in glob.iglob(pattern))


def match_paths_2(pattern):
    # a generator function
    for path in glob.iglob(pattern):
        yield pathlib.Path(path)


def match_paths_3(pattern):
    # a generator function
    yield from (pathlib.Path(path) for path in glob.iglob(pattern))


my_pattern = "output/*.csv"

match_paths_1(my_pattern)
# <generator object match_paths_1.<locals>.<genexpr> at 0x1046e7f90>

match_paths_2(my_pattern)
# <generator object match_paths_2 at 0x1046e7f20>

match_paths_3(my_pattern)
# <generator object match_paths_3 at 0x103e66900>