Python Basics for beginners video 10 : Dictionaries

In This video we i will discuss dictionary in detail. Python dictionary is an unordered collection of items. Each item of a dictionary has a key/value pair.Dictionaries are optimized to retrieve values when the key is known.


time stamp for this tutorial :

0:00 -- intro
0:23 -- Topics covered in this video
0:59 -- what is dictionary and how it is different from other container data type i.e list and string
1:39 -- comparison between dictionary and list
2:48 -- How to create a dictionary
4:13 -- example and explanation of why dictionary keys cannot be duplicated .
5:07 -- Creating dictionary from list.
6:16 -- Accessing elements from a dictionary
7:53 -- Updating elements in a dictionary
8:34 -- deleting elements from a dictionary (del and pop method).
10:28 -- Dictionary functions and methods
10:45 -- len() method of dictionary (used to calculate the length of dictionary and its values)
12:20 -- clear() methods of dictionary (used to empty an dictionary )
13:11 -- .get() methods of dictionary (used to get values from key )
13:45 -- .keys() method of dictionary (used to display all the keys in a dictionary )
15:09 -- .has_keys() methods is not present in python 3 its only present in python 2
16:15 -- .values() methods of dictionary ( used to display all the values of a dictionary )
16:34 -- .item() methods of dictionary (used to display all the key value pairs of a dictionary )


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some keywords for video:
python basics for beginners
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tags : #python_dictionary #python_basics #i_know_python