老师，启动了seleniumserver stand online，还是报错

来源：3-12 requests实现打开地址封装

慕粉1212355798

2021-01-17

#coding=utf-8
import requests
import json
url = 'http://127.0.0.1:4444/wd/hub/session/'
data = json.dumps({
‘desiredCapabilities’:{
‘browserName’:‘chrome’
}
})
res = requests.post(url, data).json()
session = res[‘sessionId’]
print(session)

控制台报错：
D:\练习python\seleniumpythonbase\venv\Scripts\python.exe D:/练习python/seleniumpythonbase/ThreeNode/requests_open_browser.py
Traceback (most recent call last):
File “D:/练习python/seleniumpythonbase/ThreeNode/requests_open_browser.py”, line 11, in
session = res[‘sessionId’]
KeyError: ‘sessionId’

Process finished with exit code 1

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