1 """

     2 The md5 and sha modules are deprecated since Python 2.5, replaced by the

     3 hashlib module containing both hash algorithms. Here, we provide a common

     4 interface to the md5 and sha constructors, preferring the hashlib module when

     5 available.

     6 """

     7 

     8 try:

     9     import hashlib

    10     md5_constructor = hashlib.md5

    11     sha_constructor = hashlib.sha1

    12 except ImportError:

    13     import md5

    14     md5_constructor = md5.new

    15     import sha

    16     sha_constructor = sha.new