Can string formatting be used to convert an integer to its binary form ?

[Neil Cerutti]

On 2006-09-29, Georg Brandl <g.brandl-nospam at gmx.net> wrote:
> Neil Cerutti wrote:
>> On 2006-09-29, Steve Holden <steve at holdenweb.com> wrote:
>>> MonkeeSage wrote:
>>>> So far as unobfuscated versions go, how about the simple:
>>>> 
>>>> def to_bin(x):
>>>>   out = []
>>>>   while x > 0:
>>>>     out.insert(0, str(x % 2))
>>>>     x = x / 2
>>>>   return ''.join(out)
>>>> 
>>>> Regards,
>> 
>> It was surprising that
>> 
>>>>> i = int("111010101", 2)
>> 
>> is a one-way operation.
>> 
>>>>> s = str(i, 2)
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in ?
>> TypeError: str() takes at most 1 argument (2 given)
>
> str() is not only for converting integers, but all other types
> too. An explicit argument for this special case is not Pythonic
> IMO.

I suppose two wrongs wouldn't make a right. ;)

-- 
Neil Cerutti