import md5
expected = "c2f1475d4b43c3727dda5a02da68093c"
fname = r"stackless-2.6.5-macosx10.5-2010-03-24.dmg"
print "expected digest", expected
received = md5.md5(file(fname, "rb").read()).hexdigest()
print ("matched", "NOT MATCHED!!") [received != expected]
raw_input("press enter to continue")