使用扩展列表并遍历

from os.path import join
from glob import glob

files = []
extensions = ['*.gif', '*.png', '*.jpg']
for ext in extensions:
   files.extend(glob(join("path/to/dir", ext)))

print(files)

这是一个Python 3.4+ pathlib解决方案:

exts = ".pdf", ".doc", ".xls", ".csv", ".ppt"
filelist = (str(i) for i in map(pathlib.Path, os.listdir(src)) if i.suffix.lower() in exts and not i.stem.startswith("~"))

此外，它会忽略所有以~开头的文件名。

你可以使用filter:

import os
import glob

projectFiles = filter(
    lambda x: os.path.splitext(x)[1] in [".txt", ".mdown", ".markdown"]
    glob.glob(os.path.join(projectDir, "*"))
)

这应该有用:

import glob
extensions = ('*.txt', '*.mdown', '*.markdown')
for i in extensions:
    for files in glob.glob(i):
        print (files)

不是glob，这里是另一种使用列表理解的方式:

extensions = 'txt mdown markdown'.split()
projectFiles = [f for f in os.listdir(projectDir) 
                  if os.path.splitext(f)[1][1:] in extensions]

与@BPL相同的答案(计算效率高)，但它可以处理任何glob模式，而不是扩展:

import os
from fnmatch import fnmatch

folder = "path/to/folder/"
patterns = ("*.txt", "*.md", "*.markdown")

files = [f.path for f in os.scandir(folder) if any(fnmatch(f, p) for p in patterns)]

这种解决方案既高效又方便。它还与glob的行为紧密匹配(请参阅文档)。

注意，使用内置包pathlib会更简单:

from pathlib import Path

folder = Path("/path/to/folder")
patterns = ("*.txt", "*.md", "*.markdown")

files = [f for f in folder.iterdir() if any(f.match(p) for p in patterns)]