[FIXED] Check if value is zero or not null in python

Issue

Often I am checking if a number variable number has a value with if number but sometimes the number could be zero. So I solve this by if number or number == 0.

Can I do this in a smarter way? I think it's a bit ugly to check if value is zero separately.

Edit

I think I could just check if the value is a number with

def is_number(s):
    try:
        int(s)
        return True
    except ValueError:
        return False

but then I will still need to check with if number and is_number(number).

Solution

If number could be None or a number, and you wanted to include 0, filter on None instead:

if number is not None:

If number can be any number of types, test for the type; you can test for just int or a combination of types with a tuple:

if isinstance(number, int):  # it is an integer
if isinstance(number, (int, float)):  # it is an integer or a float

or perhaps:

from numbers import Number

if isinstance(number, Number):

to allow for integers, floats, complex numbers, Decimal and Fraction objects.

Answered By - Martijn Pieters