youandme 2020-05-11
数据类型: a = None # None = null b = False # boolean c, d = 12, 10.6 # int float e = ‘asdd‘ # str f = [‘s‘, ‘e‘] # list,数组,可增删改查 g = (‘a‘, ‘s‘, ‘f‘) # 元组(tuple),只能查 t = { # 键:值 ‘‘: ‘‘, ‘‘: ‘‘ } # 字典 # dict key: value key是唯一的,无序的 h = { ‘s‘: 12, ‘f‘: False,}
# 取出所有的key keys = h.keys() # 遍历所有的key for i in list(keys): print(‘%s = %s‘%(i, h[i])) abc = {‘aa‘: ‘dd‘, ‘bb‘: ‘th‘} aaa = str(abc) # 字典转str bbb = eval(aaa) # str转字典 # 字典转json: json本质是字符串,只是按一定规则转换的 d_json = json.dumps(h) # json(str)转字典 : 把json格式转换成字典格式 json_dict = json.loads(d_json)
# 传递json 参数: import requests url = ‘xxxxxxxx‘ body = { ‘xxx‘: ‘xxx‘, ‘xxx‘: ‘xxx‘ } # body是json格式的 r = requests.post(url, json=body) print(r.text)
import json r = requests.post(url, data=json.dumps(body)) print(r.text)
requests里面自带解析器转字典: print(r.json()) print(type(r.json())) # 取出json中的‘result_sk_temp‘字段 # {"resultcode":"200","reason":"查询成功","result":{"sk":{"temp":"28","wind_direction":"东南风","wind_strength":"2级" result = r.json()["result"][‘sk‘][‘temp‘]
json模块转字典 import json print(json.loads(r.text)) # json格式的str转dict print(type(json.loads(r.text))) --> # 查看返回内容,是字典格式才能转json print(r.json()[‘reason‘]) print(r.json()[‘result‘][‘today‘][‘weather‘])
4.启动命令windows:chrome --remote-debugging-port=9222启动命令mac:Google\ Chrome --remote-debugging-port=9222