正则表达提取参数

代码：

#正则表达，获取code值
import re
response = '{"code":"0000","msg":"成功","data":{"accessToken":"566ede49-f272-41c3-8e93-5bf88d3db48e",' \
           '"tokenType":"bearer","refreshToken":"9327ef51-fc7f-4cc8-8c47-84357d8aa192","expiresIn":"179874",' \
           '"userId":"5541","modifyPasswordFlag":0},"success":true}'
matchObj = re.findall(r'"code":"(.+?)"',response)  #正则提取code，返回列表
print("code:"+matchObj[0])

执行结果：

code:0000