input: Write a function to determine if a given string contains any numbers. If it does, return True else return False.
  assert string_contains_number("abc123")==True
  assert string_contains_number("abc")==False
  assert string_contains_number("1a2b3c")==True
  assert string_contains_number("")==False
  assert string_contains_number("!@#$%^&*()")==False
output: def string_contains_number(s):
      return any(char.isdigit() for char in s)