Traceback (most recent call last):
  File "<pyshell#25>", line 1, in <module>
    nightlyzipfile.extract(nightlyname,r"C:\Users\**********************")
  File "C:\Python27\lib\zipfile.py", line 950, in extract
    return self._extract_member(member, path, pwd)
  File "C:\Python27\lib\zipfile.py", line 993, in _extract_member
    source = self.open(member, pwd=pwd)
  File "C:\Python27\lib\zipfile.py", line 897, in open
    raise BadZipfile, "Bad magic number for file header"
BadZipfile: Bad magic number for file header