用Python替换文件名字符

Question

我有一段代码，它会在很多文件名的后面加上“_manual”。现在我需要修改这段代码，让它把文件名最后两个字母（ES）删掉，然后用“_ES_Manual”来替换。比如说：AC-5400ES.txt 变成 AC-5400_ES_manual.txt。

我该如何把这个功能加到这段代码里呢？

folder = r"C:/Documents and Settings/DuffA/Bureaublad/test"
import os # glob is unnecessary
for root, dirs, filenames in os.walk(folder):
    for filename in filenames:
        fullpath = os.path.join(root, filename)
        filename_split = os.path.splitext(fullpath) # filename and extensionname (extension in [1])
        filename_zero, fileext = filename_split
        print fullpath, filename_zero + "_manual" + fileext
        os.rename(fullpath, filename_zero + "_manual" + fileext)

Answer 1

你可以这样做：

for filename in filenames:
    print(filename) #should display AC-5400ES.txt
    filename = filename.replace("ES.txt","ES_manual.txt")
    print(filename) #should display AC-5400ES_manual.txt
    fullpath = os.path.join(root, filename)
    os.rename(fullpath, filename)

Answer 2

这是对hughdbrown回答的一个更通用的解释。这个代码可以用来去掉任何特定的字符或一组字符。

import os

paths = (os.path.join(root, filename)
        for root, _, filenames in os.walk('C:\FolderName')
        for filename in filenames)

for path in paths:
    # the '#' in the example below will be replaced by the '-' in the filenames in the directory
    newname = path.replace('#', '-')
    if newname != path:
        os.rename(path, newname)

Answer 3

试试这个：

import os
pathiter = (os.path.join(root, filename)
    for root, _, filenames in os.walk(folder)
    for filename in filenames
)
for path in pathiter:
    newname =  path.replace('ES.txt', '_ES_manual.txt')
    if newname != path:
        os.rename(path,newname)