What all(code) do in Python?

Question

What this code do?
if all(filter(lambda x: x%4==0, num_list)):
print('yes')

my question is, what all() do here? note that num_list here is a generic list entered by user.

Answer 1

all() is a method that returns True when all elements in the given iterable are true. If not, it returns False.

Reference: programiz

Hope this helps!!!

Answer 2

all() function returns true if all elements in the list are true. Basically it's unnecessary because your filter function will return a list that contains only true values.

def all(list):
for element in list:
if not element:
return False
return True