The keys() method of Python dictionary class returns a view object consisting of keys used in the dictionary.
>>> d1 = {'name': 'Ravi', 'age': 21, 'marks': 60, 'course': 'Computer Engg'} >>>d1.keys() dict_keys(['name', 'age', 'marks', 'course'])
It can be stored as a list object. If new key-value pair is added, the view object is automatically updated.
>>> l1=d1.keys() >>> l1 dict_keys(['name', 'age', 'marks', 'course']) >>>d1.update({"college":"IITB"}) >>> l1 dict_keys(['name', 'age', 'marks', 'course', 'college'])