python 提取文件路径、文件夹、文件名、后缀

# coding=utf-8

import sys

import os


s='C:/Users/Desktop/lesson/python/calss1.py'

m_dir  = os.path.dirname(s) #输出为 'C:/Users/Desktop/lesson/python'
m_file = os.path.basename(s) #输出为 class1.py

print("m_dir = ",m_dir)
print("m_file = ",m_file)

file_name = os.path.basename(s)
print(file_name)
# 输出为 calss1.py
file_name = file_name.split('.')[0]
print(file_name)
# 输出为 calss1

stem, suffix = os.path.splitext(m_file)
print(stem,"--------", suffix) # class1 -------  .py