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"""
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
md5_hmac = md5_constructor
sha_constructor = hashlib.sha1
sha_hmac = sha_constructor
except ImportError:
import md5
md5_constructor = md5.new
md5_hmac = md5
import sha
sha_constructor = sha.new
sha_hmac = sha
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