os.walk是答案，它将找到第一个匹配项：
import osdef find(name, path): for root, dirs, files in os.walk(path): if name in files: return os.path.join(root, name)
这将找到所有匹配项：
def find_all(name, path): result = [] for root, dirs, files in os.walk(path): if name in files: result.append(os.path.join(root, name)) return result
这将匹配一个模式：
import os, fnmatchdef find(pattern, path): result = [] for root, dirs, files in os.walk(path): for name in files: if fnmatch.fnmatch(name, pattern): result.append(os.path.join(root, name)) return resultfind('*.txt', '/path/to/dir')
