import modulename [as alias]

import os,sys   # 多个模块 
import pandas as pd    # 给模块别名 
import random    # 


from modelname import member


modelname   模块名称，区分大小写
member    导入的变量、函数或者类等 , 可以导入多个 逗号分隔  ,导入全部 *

import random   
print(random.randint(1,9))   

from random import random,randint     
print(random())

from random import *    
print(randint(1,10))