![\"An](\"https:\/\/www.jquery-az.com\/wp-content\/uploads\/2016\/04\/Python-dictionary.jpg\")
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The dictionary is a data type in Python that is used to store data in key\/value<\/em> pairs.<\/p>\n If you have worked in other languages like PHP, you have worked with associative arrays; the dictionary is like that.<\/p>\n A dictionary can be created as follows:<\/strong><\/p>\n <\/p>\n See the following examples of creating, accessing, deleting, and using other methods related to dictionaries in Python.<\/p>\n In this example, a dictionary is created with three elements. The dictionary name is tel_dir<\/em> where the name will act as keys and telephone numbers as values:<\/p>\n The code for creating and displaying a dictionary:<\/p>\n Output:<\/strong><\/p>\n By giving the key of an element in square brackets, you may access the specific element of a dictionary. See this example:<\/p>\n The following code is used to access:<\/p>\n Result:<\/strong><\/p>\n In this example, a for loop is used for accessing and displaying the dictionary elements. The items()<\/strong> method is used to retrieve the key and related value at the same time, as shown in the example below:<\/p>\n The code:<\/p>\n Output:<\/strong><\/p>\n You see, first, I created the same dictionary as in the above example.<\/p>\n After that, a for loop is used where items()<\/strong> method is used with the dictionary name. The key is assigned to the name while the value is to numbers, which are displayed by using the print function.<\/p>\n You may use the len method to get the total number of elements in the specified dictionary. The following example demonstrates how you can use it:<\/p>\n This is how the length is taken by using len() method:<\/p>\n Output of above code:<\/strong><\/p>\n By using the dictionary keys()<\/strong> method, you may get the keys of the specified dictionary. See an example below for accessing the same dictionary keys as used in above example:<\/p>\ntelephone_dir = {\u2018Mike\u2019: 123445689,\u2019Haynes\u2019: 45678910, \u2026.}<\/div>\n\n\n
An example of creating a dictionary<\/strong><\/h3>\n
tel_dir = {'Mike': 123445689,'Haynes': 45678910, 'Mina':635363636}\r\n\r\nprint (tel_dir)<\/pre>\n![\"Python](\"https:\/\/www.jquery-az.com\/wp-content\/uploads\/2016\/04\/14.1-Python-dictionary.png\")
<\/p>\nAccessing a specific element of a dictionary example<\/strong><\/h3>\n
tel_dir = {'Mike': 123445689,'Haynes': 45678910, 'Mina':635363636}\r\n\r\nprint (\"The number of Mike is: \", tel_dir['Mike'])<\/pre>\nThe number of Mike is: 123445689<\/div>\nUsing a for loop to iterate through dictionary elements<\/strong><\/h3>\n
tel_dir = {'Mike': 123445689,'Haynes': 45678910, 'Mina':635363636}\r\n\r\nfor name, number in tel_dir.items():\r\n\r\nprint (\"The number of %s = %d\" % (name, number))<\/pre>\nThe number of Mike = 123445689
\nThe number of Haynes = 45678910
\nThe number of Mina = 635363636<\/div>\nGetting total number of dictionary items example<\/strong><\/h3>\n
tel_dir = {'Mike': 123445689,'Haynes': 45678910, 'Mina':635363636}\r\n\r\nprint (\"Total length of dictionary = \", len(tel_dir))<\/pre>\nTotal length of dictionary = 3<\/div>\nGetting keys of a dictionary by using keys method<\/strong><\/h3>\n
![\"Python](\"https:\/\/www.jquery-az.com\/wp-content\/uploads\/2016\/04\/14.7-Python-dictionary-clear.png\")
<\/p>\n![\"dictionary](\"https:\/\/www.jquery-az.com\/wp-content\/uploads\/2016\/04\/14.9-Python-dictionary-sorted.png\")
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