check if something is a number python code example

Example 1: check integer number python

N.is_integer()

Example 2: is number python

var.isdigit()
#return true if all the chars in the string are numbers
#return false if not all the chars in the string are numbers

Example 3: how to check if digit in int python

s = set(str(4059304593))
print('2' in s)