Import module and the package

Import module

• Module is a pyfile
• File is too large, too much accumulation of code, use a custom module to split into multiple files multiple lines of code, making the code more rigorous and clear

Introducing whole module

import demo
print(demo.a)  # 变量
print(demo.b)  
demo.func()  # 函数

Introducing a single function

from demo import a  # 导入a变量
from demo import b
print(a)
print(b)

from demo import a,b,func  # 导入多个功能
print(a)
print(b)
func()

from demo import *  # 导入所有demo中多少有功能
print(a) 
print(b)
func()

from demo import a as abc,b as bcd  # 导入功能，并重命名
print(abc,bcd)

Import module summary

from module import variables

import module

Module. The value of the variable access variables

import 模块名
from 模块名 import 变量名
from 模块名 import 变量1,变量2
from 模块名 import 变量1 as 新名1,变量2 as 新名2
from 模块名 import *

Introducing the package

Either import module or pack, you must make sure the path modules and packages to be introduced in the sys.pathlist

import sys
sys.path.append('F:\python自动化27期\day8\模块和包\dir')
from pack.api import policy
print(policy.name)

导入包
    from 包.包.包 import 模块
        模块.xxx直接获取值
    import 包.包.模块
        包.包.模块,xxx获取值