[Tutor] built in functions int(),long()

[lonetwin]

Hi there,
On Wednesday 18 Jun 2003 12:09 pm, cino hilliard wrote:
> >>>long('123',2)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> ValueError: invalid literal for long(): 123
     This is correct because '123' is an invalid literal in a base 2 number 
system.
    int and long convert ^^strings^^ to ^^numbers^^. The optional second 
argument is to specify what radix the first (string) argument is in. For 
example:
--------------------------------------------
>>> int('01',2)
1
>>> int('10',2)
2
>>> int('11',2)
3
>>>  int(11)
11
>>>
--------------------------------------------
  If the second argument is zero, the radix is guessed. For example:
--------------------------------------------
>>> int('0xff', 0)
255
>>>
--------------------------------------------
       I guess you mistakenly assumed that the int() and float() builtins also 
convert the number strings into the base radix that you provide as the second 
argument.

HTH
Peace
Steve

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