Method to remove copyright information in the header of a Java file in python

When using other people's code, in order not to retain the file header copyright information, need to delete one by one, time-consuming and laborious,

Wrote a script, simply clear the directory of all files header copyright information.

# -*- coding: utf8 -*- 
''''' 
 delete java Notes such as copyright in the head of the file  
package Upper part  
''' 
import os 
import sys 

def delHeader(filepath): 
if os.path.exists(filepath) : 
file = open(filepath) 
lines = file.readlines() 
beforeTag = True 
writer = open(filepath, 'w') 
for line in lines : 
if 'package' in line: 
beforeTag = False 
if beforeTag == False: 
writer.write(line) 

if __name__ == '__main__': 
path='F:\space\xxx\src' 
list = os.walk(path, True) 
for dir in list: 
files = dir[2] 
for file in files : 
if '.java' in file : 
filepath = os.path.join(dir[0], file) 
print filepath 
delHeader(filepath) 

print 'Complete!!!!!!!!!!!!!!!'