[Python-Dev] Don't set local variable in a list comprehension or generator

Terry Reedy tjreedy at udel.edu
Wed May 18 23:13:23 CEST 2011

On 5/18/2011 10:19 AM, Nadeem Vawda wrote:

> I'm not sure why you would encounter code like that in the first place.
> Surely any code of the form:
>      ''.join(c for c in my_string)
> would just return my_string? Or am I missing something?

Good question. Anything useful like "'-'.join(c for c in 'abc')" is the 
same as "'-'.join('abc'). The same, as far as I can think of, for 
anything like list() or set() taking an iterable arg.

Terry Jan Reedy

More information about the Python-Dev mailing list