how to test if string does not have numbers python code example

Example 1: python test if number in string

>>> def hasNumbers(inputString):
...     return any(char.isdigit() for char in inputString)
... 
>>> hasNumbers("I own 1 dog")
True
>>> hasNumbers("I own no dog")
False

Example 2: python check if number

if type(variable) == int or type(variable) == float:
    isNumber = True