Beginner : removing tuples from a list

[Anton Muhin]

Fabrizio wrote:
> Hi,
> 
> I have a list containing tuples ("records") :
> 
> t = [(1,'john','usa'),(2,'jim','uk',),(3,'jeanne','f'),(4,'jack','usa')]
> 
> I want to remove all the "european records". I tried the following, but it
> doesn't work  :
> 
> europe = ['uk','f']
> 
> x = 0
> for z in t :
>     if z[2] in europe :
>         t.pop(x)
>     x = x +1
> 
> print t
> 
> 
>>>>[(1, 'john', 'usa'), (3, 'jeanne', 'f'), (4, 'jack', 'usa')]
> 
> 
> But Jeanne is still there...
> 
> TIA for your help
> 
> 
> Fabrizio
> 
> 
> 
> 

Hello, Fabrizio!

This should help:

notEuropean = [record for record in t if record[2] not in europe]

BTW, note , in ('2', 'jim', 'uk' *,*) --- it makes len(this tuple) = 4, 
not 3 as for others.

HTH,
Anton.