Why does “a == x or y or z” always evaluate to True?
I am writing a security system that denies access to unauthorized users.
boolean-expression
What is Truthy and Falsy? How is it different from True and False?
I just learned there are truthy and falsy values in python which are different from the normal True and False.
‘and’ (boolean) vs ‘&’ (bitwise) – Why difference in behavior with lists vs numpy arrays?
What explains the difference in behavior of boolean and bitwise operations on lists vs NumPy arrays?
Merge lists that share common elements
My input is a list of lists. Some of them share common elements, eg.
NumPy chained comparison with two predicates
In NumPy, I can generate a boolean array like this: