python批量重命名文件的后缀名

目录

• 一、涉及语法
• 二、代码

一、涉及语法

1、正则表达式

2、文件重命名

二、代码

import os
import re

# 1: m to h
# 2: m to c
# 3: h to m
# 4: c to m
a_Path = "D:/xxx/0_Desktop/xxx/PatckgeTest_demo - h"
a_Type = 3

if(1 == a_Type):
    a_name = '.m'
    b_name = '.h'
elif(2 == a_Type):
    a_name = '.m'
    b_name = '.c'
elif(3 == a_Type):
    a_name = '.h'
    b_name = '.m'
elif(4 == a_Type):
    a_name = '.c'
    b_name = '.m'
else:
    print('error happen')



filelist = os.listdir(a_Path)

print(type(filelist))
newList = []

for i in filelist:

    k = re.split( a_name+'$', i)
    if(len(k) > 1):
        newList.append(i)

print('-------------------------------------')
for i in newList:
    #print(i)
    k = re.split( a_name+'$', i)
    p_newName = k[0] + b_name
    #print(p_newName)

    p_oldFilePath = a_Path + '/' + i
    p_newFilePath = a_Path + '/' + p_newName
    #print(p_oldFilePath)
    #print(p_newFilePath)

    try:
        os.rename(p_oldFilePath, p_newFilePath)
    except Exception as e:
        print(e)
        print('rename file fail\r\n')
    else:
        print('rename file success\r\n')