We have learned about list in previous blogs, list can contain dictionary object vice versa. Both has the ability to change their size at run time. list and dictionary can grow and shrink according to elements at run time. But what is the actual difference b/w these two? Read below.  One is that elements from list object contains elements in linear manner but the dictionary object contains elements as key and value pair.   Elements from list object are fetched with element's location but in dictionary the elements is fetched with key. Last but not the least that list is an ordered object means when the list object is printed it shows the elements as these were inserted but dictionary sort the keys and print the values.      Examples:-  1 2 3 dict_ = dict () dict_ = { "Python" : "Hunter" , "Is" : "Better" } print (dict_) There are lot of methods to manipulate the dictionary object but some of the met...

J ust like anything in python, keyword "with" is introduced in python to make the things little easy. Imagine a situation where you have to manage the resources e.g opening file and closing them after the code is executed on file. To achieve this sort of task we have to write the code as follow:      Download   But if you do it often you could do this as follow to make the code reusable: Download But why do you need to do this when you know that you have to execute the only for once.  To answer this question  python-dev team finally came up with following approach: Download  Note:- Make sure you have "file.txt" and python code file in same dir. The "with"  keyword replaces the try finally block. "with" keyword executes the openFileClass() context manager and internally calls the __enter__(self) method, and whatever is being returned from __enter__(self) method is being stored in tar...