Question

我正在学习如何在Python 2.7.13上编码，我很喜欢它！但是，我被困住了，想寻求你的帮助。

我正在关注此视频：https://www.youtube.com/watch?v=TMw5EzdIucE

任务是重命名文件夹中的文件，以便每个文件标题中都没有数字。

这是我的代码不起作用：

import os

# step 1) find files in folder
for file in os.listdir("/Users/applereciate/Downloads/prank"):
    filelist = print(file)
    os.chdir("/Users/applereciate/Downloads/prank")

# step 2) for each file, rename filename 
    os.rename(filelist, filelist.translate(None, "0123456789"))

这是教师的代码，对我来说也不起作用：

import os
def rename_files(): 
#question 1: is it really necessary to define a function to solve this problem? 

    # step 1) find files in folder
    file_list = os.listdir("/Users/applereciate/Downloads/prank"):
    saved_path = os.getcwd()
    print("current working directory is "+saved_path)
    os.chdir("/Users/applereciate/Downloads/prank")

    # step 2) for each file, rename filename
    for file_name in file_list: 
#question 2: does this line make filename a file in filelist? so that it assumes that all files in filelist are now under the variable "filename"?
           os.rename(file_name, file_name.translate(None, "0123456789")) 
    os.chdir(saved_path)
    renamefiles()
#question 3: what's the purpose of this line above?

我很想知道为什么我的代码不起作用，所以请随时给我你诚实的想法。

Answer 1

文件名在file，因此请使用它：

os.rename(file, file.translate(None, "0123456789"))

但如果你真的想出去做导师，请完全跳过chdir并考虑边缘条件。

import os
import re

basedir = "/Users/applereciate/Downloads/prank"

# does this directory exist?
if os.path.isdir(basedir):
    for fn in os.listdir(basedir):
        # Note: There are several ways to remove digits:
        # python 2.x
        # newfn = fn.translate(None, "0123456789")
        # python 3.x (but make trans outside the loop...)
        # trans = {ord(c):None for c in '0123456789'}
        # newfn = fn.translate(trans)
        # something that works in 2 and 3
        newfn = re.sub(r'\d+', '', fn)
        # don't bother with a rename if there wasnt a translation
        if newfn != fn:
            # don't chdir, just set your paths up right
            absfrom = os.path.join(basedir, fn)
            absto = os.path.join(basedir, newfn)
            # ignore subdirectories
            if os.isfile(absfrom):
                # see if we are overwriting anything
                if os.path.exists(absto):
                    print('ERROR: Name collision', absto)
                else:
                    os.rename(absfrom, absto)

重命名文件夹中的文件？

1 个答案: