2

我正在尝试识别目录中最新的和第二个最新的文件。这是我打算使用的代码:

CONFIGS = "/Users/root/dev/config-files/"
allConfigs = sorted(os.listdir(CONFIGS), key=os.path.getctime)
t1 = "%s/%s" % (CONFIGS, allConfigs[-1])
t2 = "%s/%s" % (CONFIGS, allConfigs[-2])

我遇到了这个错误,我不知道为什么:

MBA:dev root$ python
Python 2.7.3 (default, Apr 19 2012, 00:55:09) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> CONFIGS = "/Users/root/dev/config-files/"
>>> allConfigs = sorted(os.listdir(CONFIGS), key=os.path.getctime)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/genericpath.py", line 64, in getctime
    return os.stat(filename).st_ctime
OSError: [Errno 2] No such file or directory: 'newest.txt'
>>>

有人有什么想法吗?

4

2 回答 2

7

os.listdir返回相对名称,因此您必须使用os.path.join使它们成为绝对名称:

allConfigs = sorted(os.listdir(CONFIGS),
    key=lambda p: os.path.getctime(os.path.join(CONFIGS, p))
于 2012-10-03T19:18:41.707 回答
1

我认为它缺少右括号:

allConfigs = sorted(os.listdir(CONFIGS),
   key=lambda p: os.path.getctime(os.path.join(CONFIGS, p)))
于 2013-02-19T07:26:01.610 回答