Fix for randomely ocurring bug
The bug and it's fix are described by the first comment from Guido
in http://code.google.com/p/googleappengine/issues/detail?id=772.
Patch by: Guido van Rossum
"""
The md5 and sha modules are deprecated since Python 2.5, replaced by the
hashlib module containing both hash algorithms. Here, we provide a common
interface to the md5 and sha constructors, preferring the hashlib module when
available.
"""
try:
import hashlib
md5_constructor = hashlib.md5
sha_constructor = hashlib.sha1
except ImportError:
import md5
md5_constructor = md5.new
import sha
sha_constructor = sha.new