How to remove copyright information from the Java file header in Python _python

In the use of other people's Code, in order not to retain the file head copyright information, need to delete one by one, time-consuming and laborious,

Write a script that simply clears the header copyright information for all files in the directory.

#-*-Coding:utf8-*- 
' 
Delete the Java file header's Copyright Annotation 
package Section 
' 
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 ' on line: 
Beforetag = Fa LSE 
If Beforetag = = False: 
writer.write (line) 

if __name__ = ' __main__ ': 
path= ' f:\\space\\xxx\\  src ' 
list = Os.walk (path, True) for 
dir-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!!!!! !!!!!!!!!!'