虽然Python的默认glob并没有真正遵循Bash的glob，但您可以使用其他库来做到这一点。我们可以在wcmatch的glob中启用大括号。

>>> from wcmatch import glob
>>> glob.glob('*.{md,ini}', flags=glob.BRACE)
['LICENSE.md', 'README.md', 'tox.ini']

你甚至可以使用扩展glob模式，如果这是你的偏好:

from wcmatch import glob
>>> glob.glob('*.@(md|ini)', flags=glob.EXTGLOB)
['LICENSE.md', 'README.md', 'tox.ini']

你可以用这个:

project_files = []
file_extensions = ['txt','mdown','markdown']
for file_extension in file_extensions:
    project_files.extend(glob.glob(projectDir  + '*.' + file_extension))

也许我遗漏了一些东西但如果只是简单的glob也许你可以这样做?

projectFiles = glob.glob(os.path.join(projectDir, '*.{txt,mdown,markdown}'))

来这里寻求帮助后，我有了自己的解决方案，想和大家分享。它基于user2363986的答案，但我认为这更具可伸缩性。这意味着，即使您有1000个扩展，代码仍然看起来很优雅。

from glob import glob

directoryPath  = "C:\\temp\\*." 
fileExtensions = [ "jpg", "jpeg", "png", "bmp", "gif" ]
listOfFiles    = []

for extension in fileExtensions:
    listOfFiles.extend( glob( directoryPath + extension ))

for file in listOfFiles:
    print(file)   # Or do other stuff

从前面的答案

glob('*.jpg') + glob('*.png')

这是一个较短的问题，

from glob import glob
extensions = ['jpg', 'png'] # to find these filename extensions

# Method 1: loop one by one and extend to the output list
output = []
[output.extend(glob(f'*.{name}')) for name in extensions]
print(output)

# Method 2: even shorter
# loop filename extension to glob() it and flatten it to a list
output = [p for p2 in [glob(f'*.{name}') for name in extensions] for p in p2]
print(output)

最简单的方法是使用itertools.chain

from pathlib import Path
import itertools

cwd = Path.cwd()

for file in itertools.chain(
    cwd.rglob("*.txt"),
    cwd.rglob("*.md"),
):
    print(file.name)