Question

I am trying to compare a user input to every element of a list, where NL is the list, but for some reason it never enters the else loop.

NL = range(1, sc.NLayer + 1)

if (x for x in NL if x < sc.NLayer): 
    print 'true'
else:
    print 'false'

sc.NLayer is user input.

assume sc.NLayer = 5; it is not hitting the else condition . Please help

Answer 1

You might want to use the built in any function.

any([True, False, 0, []])
=> True

So in your code, it would be:

if any(x for x in NL if x < sc.NLayer):
    print 'true'
else:
    print 'false'

or possibly a for loop:

for x in NL:
    if x < sc.NLayer:
        print 'true'
    else:
        print 'false'