Python variable type-the practical application and Analysis of dictionary

In this article, we'll take a look at the dictionary of Python variable types, which is a variable type that we often use in combat. Hopefully this article will give you some help with the python you just touched.

Python dictionary:

The Dictionary (dictionary) is the most flexible built-in data structure type in Python, except for lists. A list is an ordered collection of objects, and a dictionary is an unordered collection of objects.

The difference between the two is that the elements in the dictionary are accessed by keys, not by offsets.

The dictionary is identified with "{}". A dictionary consists of an index (key) and a value corresponding to it.

We can use an example to understand:

#!/usr/bin/python#-*-coding:utf-8-*-dict = {}dict[' one '] = "This was one" dict[2] = "This is one" tinydict = {' Name ': ' John ', ' Code ': 6734, ' dept ': ' Sales '}  print dict[' one ']          # output key is ' one ' value print dict[2]              # Output key is 2 value print tinydict< c10/># Output Full dictionary print Tinydict.keys ()      # output all keys print tinydict.values ()    # Output All values

The result of the above example is:

This was Onethis is two{' dept ': ' Sales ', ' Code ': 6734, ' name ': ' John '}[' dept ', ' Code ', ' name ' [' Sales ', 6734, ' John ']

Through the above examples to understand the dictionary in Python, I hope this article will give you just contact with Python to provide some help.