how to check if a string contains anything but 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 how to check if string contains only numbers

print("012345".isdecimal())
OUTPUT
True
print("a12345".isdecimal())
OUTPUT
False