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Groups > comp.lang.python > #8983

Re: Does hashlib support a file mode?

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Phlip wrote:
>> On 2011.07.06 12:38 PM, Phlip wrote:
>>> Python sucks. m = md5() looks like an initial assignment, not a
>>> special magic storage mode. Principle of least surprise fail, and
>>> principle of most helpful default behavior fail.
 >>>
> 
> If I call m = md5() twice, I expect two objects.

You didn't call md5 twice -- you called it once when you defined the 
function.

Phlips naive code:
---
def file_to_hash(path, m = hashlib.md5()):
                        \---------------/
                         happens once, when
                         def line is executed


If you want separate md5 objects, don't create just one when you create 
the function, create one inside the function:

def file_to_hash(path, m = None):
     if m is None:
         m = hashlib.md5()


You should try the Principle of Learning the Language.

~Ethan~

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Re: Does hashlib support a file mode? Phlip <phlip2005@gmail.com> - 2011-07-06 12:07 -0700
  Re: Does hashlib support a file mode? geremy condra <debatem1@gmail.com> - 2011-07-06 15:15 -0400
  Re: Does hashlib support a file mode? Andrew Berg <bahamutzero8825@gmail.com> - 2011-07-06 14:42 -0500
  Re: Does hashlib support a file mode? Mel <mwilson@the-wire.com> - 2011-07-06 15:43 -0400
    Re: Does hashlib support a file mode? Anssi Saari <as@sci.fi> - 2011-07-07 14:29 +0300
      Re: Does hashlib support a file mode? Paul Rudin <paul.nospam@rudin.co.uk> - 2011-07-07 13:13 +0100
  Re: Does hashlib support a file mode? Ian Kelly <ian.g.kelly@gmail.com> - 2011-07-06 13:48 -0600
  Re: Does hashlib support a file mode? Ethan Furman <ethan@stoneleaf.us> - 2011-07-06 13:24 -0700

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