python分离文件路径和文件名，文件名和后缀名

In [1]: import os

In [2]: file_path=r'E:\data\test1001.csv'

In [3]: path,file=os.path.split(file_path)

In [4]: path
Out[4]: 'E:\\data'

In [5]: file
Out[5]: 'test1001.csv'

In [6]: file_name,suffix=file.split('.')

In [7]: file_name
Out[7]: 'test1001'

In [8]: suffix
Out[8]: 'csv'