Everyone (development, managers, architects, ops, etc.) in the value stream shares responsibility for handling operational incidents and gets visceral feedback on upstream decisions. (Pedro Canahuati, Facebook with website conversion rates up 50% b. A BRIEF HISTORY OF A/B TESTING i. Pioneered in direct response marketing ii. Early efforts required sending thousands of postcards/flyers and asking consumer

#使用 import requests response = requests.get("http://sysyear.top:4600") print(type(response.text)) # 类型为str response.encoding = "utf-8" # 指定返回数据的文本编码 print(response.status_code) # 返回http响应状态码 返回http响应状态码 print(response.headers) # 返回http头部信息，单行字典类型 print(response.text) # 返回正文内容，多行文本 import requests myurl = "http://sysyear.top:4600" myheaders = { "Accept": "application/json" "Content-Type": "application/json;charset=utf8" } mydata = "dddd" response = requests.post(myurl, headers=myheaders, data=mydata, verify=False) response.encoding = "utf-8" # 指定返回数据的文本编码 ★selenium（浏览器url操作）