安装：
pip3 install requests
pip3 install selenium
pip3 install bs4
pip3 install pyquery
pip3 install pymysql
pip3 install pymongo
pip3 install redis
pip3 install flask
pip3 install django
pip3 install jupyter
验证是否安装成功：
import requests
import selenium
form bs4 import beautifulsoup
import pyquery
import pymysql
import pymongo
import redis
import flask
import django
import jupyter