使用Python os.walk标识文件列表

Question

Possible Duplicate:
In Python, fastest way to build a list of files in a directory with a certain extension

我当前正在使用os.walk递归地扫描标识.MOV文件的目录

def fileList():
    matches = []
    for root, dirnames, filenames in os.walk(source):
        for filename in fnmatch.filter(filenames, '*.mov'):
            matches.append(os.path.join(root, filename))
    return matches

如何扩展此项以标识多个文件，例如.mov、.mov、.avi、.mpg？

谢谢。

Answer 1

使用os.path.splitext的替代方法：

for root, dirnames, filenames in os.walk(source):
    filenames = [ f for f in filenames if os.path.splitext(f)[1] in ('.mov', '.MOV', '.avi', '.mpg') ]
    for filename in filenames:
        matches.append(os.path.join(root, filename))
return matches

Answer 2

pattern = re.compile('.*\.(mov|MOV|avi|mpg)$')

def fileList(source):
   matches = []
   for root, dirnames, filenames in os.walk(source):
       for filename in filter(lambda name:pattern.match(name),filenames):
           matches.append(os.path.join(root, filename))
   return matches