摘要：
1.dump import json persons=[ { 'username':"wangchenyang", 'age':14, 'country':"china" }, { 'username':"王晨阳", 'age':14, 'country':"china" } ] # json_st 阅读全文
摘要：
1.读取 import csv def read_csv_demo1(): with open('stock.csv','r') as fp: # reader是一个迭代器 reader=csv.reader(fp) next(reader) for x in reader: name=x[3] v 阅读全文
摘要：
import requests import re from lxml import etree headers={ "User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) C 阅读全文