完整路径 分离文件路径、文件名、后缀

os.path.split()   分离文件路径与文件名

import os

fullpath = 'E:/folder/t2333.py'
(filepath, filename) = os.path.split(fullpath)

# print(filepath, filename)
# E:/folder t2333.py

os.path.splitext()   分离文件名与后缀

import os

filename = 't2333.py'
(name, suffix) = os.path.splitext(filename)

# print(name, suffix)
# t2333 .py

字符串 分离文件名、后缀

split()   分离文件名与后缀

stringpath = 'E:/folder/t2333.py'

filename = stringpath.split('/')[-1]
# print(filename)
# t2333.py

(name, suffix) = filename.split('.')
# print(name, suffix)
# t2333 py

注意，这里分离的后缀与上面分离的区别，这里的不带“.”