input: Write a function to check if a given string contains any numbers. If the string contains any number return True else return False.
  assert string_contains_number("Hello123")==True
  assert string_contains_number("Hello")==False
  assert string_contains_number("123")==True
  assert string_contains_number("abc456")==True
  assert string_contains_number("")==False
output: def string_contains_number(s):
      return any(char.isdigit() for char in s)