0 Basic python-4.5 Standard type classification

1. By storage: Atomic type and container type

Atomic type: Can contain only one object

Container type: can contain multiple objects

Classification	Python type
Atomic type	Numeric and string
Container type	Lists, tuples, and dictionaries

2. Press to see if it can be changed: variable and immutable

Classification	Python type
Immutable types	values, tuples, and strings
Variable type	List, dictionary

Here's what we need to illustrate: why values and strings are immutable, we illustrate by following an example:

From the above two images we can see, in fact, the value behind is simply a new object, re-assignment, so that the value and string is immutable

Then look at the tuple:

Although the value inside has changed, the entire tuple object has not changed, so the tuple is mutable.

3. Access by object slicing: direct access, sequential access, mapped access

Classification	Python type
Direct access	Numerical
Sequential access	list, tuple, string
Map Access	Dictionary

There are no more examples here, there are many concrete examples in the QuickStart.

Right here, thank you.

------------------------------------------------------------------

Click to jump 0 basic python-Catalogue

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

0 Basic python-4.5 Standard type classification