On 09/16/2012 08:56 PM, Scurvy Scott wrote:
> On Sun, Sep 16, 2012 at 5:23 PM, Dave Angel <d...@davea.name> wrote:
>
>> On 09/16/2012 07:56 PM, Scurvy Scott wrote:
>>> scratch that, new code is below for your perusal:
>>>
>>> from Crypto.PublicKey import RSA
>>> import hashlib
>>>
>>> def repeat_a_lot():
>>> count = 0
>>> while count < 20:
>>> You're kidding, aren't you? while loops are meant for those times when
>>> you don't know how many times the loop is to iterate.
>>
> Acutally, Dave, I would be the one setting just how many times the loop
> would run manually. Actually the loop would run 2^80 times, so it was more
> of a test to see if the output was different each time it ran more than
> trying to run it the correct amount of times.
>
Since you know the count before you start the loop, then use xrange(),
rather than while. If you had to test some condition other than a
simple count, then you might want to use while. As the loop was coded,
you have three uses of a variable that doesn't matter to anyone reading
the code. one to initialize it, one to test it, and one to increment it.
>>> m = RSA.generate(1024)
>>> b = hashlib.sha1()
>>> b.update(str(m))
>>> a = b.hexdigest()
>>> print a[:16] + '.onion'
>>> count += 1
>>> repeat_a_lot()
>>>
>>>
>>>
>> def repeat_a_lot():
>> for _ in xrange(20):
>> m = RSA.generate(1024)
>> b = hashlib.sha1()
>> b.update(str(m))
>> a = b.hexdigest()
>> print a[:16] + '.onion'
>>
>> repeat_a_lot()
>>
>>
> Why would you use an underscore rather than a letter or name like I've
> always seen. I've never seen an underscore used before
Standard convention for an unused loop variable. But if you prefer, no
harm in naming it something like
for unused_counter_here in xrange(20):
The unadorned underscore leads the reader to expect that you don't use the loop
variable anywhere, like for indexing some matrix.
--
DaveA
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