pickle的用法

我就是我520小莉

在看了小甲鱼的视频以后感觉对pickle十分感兴趣
下面我把视屏中的操作给发表一下
首先是py文件
import urllib.request
import json
import pickle
pickle_file=open("city_data.pkl",'rb')
city=pickle.load(pickle_file)
password=input('请输入城市:')
name1=city[password]
File1 =urllib.request.urlopen('http://m.weather.com.cn/data/'+name1+'.html')#打开url
weatherHTML= File1.read().decode('utf-8')#读入打开的url
weatherJSON = json.JSONDecoder().decode(weatherHTML)#创建json
weatherInfo = weatherJSON['weatherinfo']
#打印信息
print ( '城市：', weatherInfo['city'])
print ('时间：', weatherInfo['date_y'])
print ( '24小时天气：')
print ('温度：', weatherInfo['temp1'])
print ('天气：', weatherInfo['weather1'])   
print ('风速：', weatherInfo['wind1'])
print ('紫外线：', weatherInfo['index_uv'])
print ('穿衣指数：', weatherInfo['index_d'])
print ('48小时天气：')
print ('温度：', weatherInfo['temp2'])
print ('天气：', weatherInfo['weather2'])
print ('风速：', weatherInfo['wind2'])
print ('紫外线：', weatherInfo['index48_uv'])
print ('穿衣指数：', weatherInfo['index48_d'])
print ('72小时天气：')
print ('温度：', weatherInfo['temp3'])
print ('天气：', weatherInfo['weather3'])
print ('风速：', weatherInfo['wind3'])
input ('按任意键退出：')


city_data.pkl文件只保留文件里面的

首先是创建字典
import pickle
pickle_file=open("cit_data.pkl",'wb')
pickle.dump(city,pyckle_file)
pickle_file.close()

在.py文件中的操作
import pickle
pickle_file=open("city_data,pkl",'rb')
city=pickle.load(pickle_file)