how to check if a number contains a certain digit in 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

Example 3: test if character is number python string

>>> 'A'.isdigit()
False
>>> '1'.isdigit()
True

Example 4: how to check if digit in int python

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