input: Write a function to check if a given string contains any numbers. If it contains any numbers return True else return False.
  
  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 World") == False
  assert string_contains_number("123Hello") == True
  assert string_contains_number("ABC123") == True
  assert string_contains_number("") == False
output: def string_contains_number(string):
      pattern = re.compile("[0-9]") 
      return pattern.search(string) != None