input: Write a function to determine if a given string contains another given substring. If it contains the substring, return True; otherwise, return False. 
  def check_contains(query, word): 
      if query.find(word) != -1:
          return True
      return False
  
  assert check_contains("catering", "cat")==True
  assert check_contains("elephant", "ant")==True
  assert check_contains("python", "java")==False
  assert check_contains("wonderful", "wonder")==True
  assert check_contains("hello", "world")==False
output: def check_contains(query, word): 
      if query.find(word) != -1:
          return True
      return False