Python lambda with if but without else

Question

I was writing some lambda functions and couldn\'t figure this out. Is there a way to have something like lambda x: x if (x<3) in python? As lambda a,b: a i

Answer 1

You can always try to invoke 'filter' for conditional checks. Fundamentally, map() has to work on every occurrence of the iterables, so it cannot pick and choose. But filter may help narrow down the choices. For example, I create a list from 1 to 19 but want to create a tuple of squares of only even numbers.

x = list(range(1,20))

y = tuple(map(lambda n: n**2, filter(lambda n: n%2==0,x)))

print (y)