Is it possible to add a where clause with list comprehension?

Question

Consider the following list comprehension

[ (x,f(x)) for x in iterable if f(x) ]

This filters the iterable based a condition f and

Answer 1

Nothing says you must use comprehensions. In fact most style guides I've seen request that you limit them to simple constructs, anyway.

You could use a generator expression, instead.

def fun(iterable):
    for x in iterable:
        y = f(x)
        if y:
            yield x, y


print list(fun(iterable))