input: Write a function to determine if a given string contains any numbers. If it contains numbers 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("")==False
  assert string_contains_number("abc1def")==True
output: def string_contains_number(s):
      return any(char.isdigit() for char in s)