text: # create dictionary 
  person = {
      'name' : 'Tazri',
      'age' : 17
  }
  
  person['favorite subject'] = 'Science';
  person['height'] = '5.1foot';
  person['weight'] = '45kg';
  
  # print person
  print("person : ",person);
  
  
  # use pop to delete weight key
  person.pop('height');
  print("\n\nafter pop height : ");
  print(person);
  
  # we can not delete not exist key by pop
  # person.pop('none');
  # it must throw error
  
  # popitem
  # it remove last item of dictionary but before version 3.7 it remove radomly remove anyone key.
  person.popitem();
  print("\n\nAfter person.popitem() : ");
  print(person);
  
  # del 
  # this keyword can use delete key from object
  del person['age'];
  print("\nAfter del person['age'] : ");
  print(person);
  
  # we can not delete key which is not exist in dicitionary
  
  # clear 
  # this method use here to clear the all dictionary easily
  person.clear();
  print("\n\nAfter person.clear() : ");
  print(person);