list to tuple and vice versa

[David C Ullrich]

On Sun, 18 Oct 2009 14:33:17 +1100, Ben Finney wrote:

> Jabba Laci <jabba.laci at gmail.com> writes:
> 
>> Hi,
>>
>> I have some difficulties with list -> tuple conversion:
>>
>> t = ('a', 'b')
>> li = list(t)   # tuple -> list, works print li   # ['a', 'b']
>>
>> tu = tuple(li)   # list -> tuple, error print tu   # what I'd expect:
>> ('a', 'b')
> 
> Works fine for me:
> 
>     Python 2.5.4 (r254:67916, Sep 26 2009, 11:00:02) [GCC 4.3.4] on
>     linux2
>     Type "help", "copyright", "credits" or "license" for more
>     information.
>     >>> t = ('a', 'b')
>     >>> li = list(t)
>     >>> print li
>     ['a', 'b']
>     >>> 
>     >>> tu = tuple(li)
>     >>> print tu
>     ('a', 'b')
> 
>> The error message is: "TypeError: 'tuple' object is not callable".
> 
> Nothing in your example code is calling a tuple object. This makes me
> suspect that what you showed us is not what you actually tried.
> 
> You might want to try the above session yourself and paste the resulting
> session *literally* (rather than re-typing) as I did above, so we can
> see what you're seeing.

Surely it's obvious what he did - something like

tuple = tuple([1,2])

After all, "tuple" is a reasonable name...