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#!/usr/bin/env python
# -*- coding: utf-8 -*-

import shutil os
shutil.rmtree('要清空的文件夹名')
os.mkdir('要清空的文件夹名')

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
def delete_file_folder(src):
    '''delete files and folders'''
    if os.path.isfile(src):
        try:
            os.remove(src)
        except:
            pass
    elif os.path.isdir(src):
        for item in os.listdir(src):
            itemsrc = os.path.join(src,item)
            delete_file_folder(itemsrc) 
        try:
            os.rmdir(src)
        except:
            pass
          
dirname=r'G:\windows'
print delete_file_folder(dirname)
os.mkdir(dirname)