Re: [Python-ideas] Add "while" clauses to generator expressions

Gerald Britton schrieb:

I've been using Python generators for a while now. e.g.

a=(i for i in range(10))

a.next() a.next() ...etc.

I also find the "if" clause handy:

a = (i for i in range(10) if i%2==0)

(I know that range(0,12,2) will do the same thing, but it's the idea I like, especially for more complex predicates.)

I would like to know if anyone has thought of adding a "while" clause as well, like this:

a = (i for i in range(100) while i <=50)

from itertools takewhile a = takewhile(lambda i: i <= 50, xrange(100))