input: Write a function to check if a given string contains any numbers.
  
  def string_contains_number(string):
      pattern = re.compile("[0-9]") 
      return pattern.search(string) != None
  
  assert string_contains_number("Hello123")==True
  assert string_contains_number("Hello")==False
  assert string_contains_number("1World")==True
  assert string_contains_number("Python3.9")==True
  assert string_contains_number("")==False
output: def string_contains_number(string):
      return any(char.isdigit() for char in string)