Python Knowledge points Summary of the SUM function

Recently prepared to learn python, to recharge their own charge, these are I tidy up some of the basic knowledge of Python, will continue to update, and I hope to communicate with you

First, built-in functions

CMP (OBJ1,OBJ2)

Repr (obj) #返回一个对象的字符串表示 is actually equivalent to "

STR (obj) #同上

Type (obj) #返回对象的相应类型

X**y and POW (x, y) all represent the Y-times of X

Ii. Types of factory functions

Int () long () float ()Complex ()

STR () Unicode () basestring ()list ()

Tuple ()

Three, A storage type

(1) Atomic/scalar storage: Can hold a single Literal object type (numeric string)

(2) Container storage: Accommodates multiple object types (list, typle, directory)

B Update type

In fact, a new object was created and replaced the old object

Variable object list, dictionary

Immutable object numbers, strings, tuples

C Access model

Direct Access to all numeric types

Sequential String list tuple

Map Hash Key-value pair

Here the types can be summarized as follows:

This is what I have just summed up, in the future I will continue to write, and hope to communicate with you.

Python Knowledge points Summary of the SUM function