If you have this word in the Curl answer, print "OK"

Question

I made a Python URL to check some information of my client, everything is going well, the answer of my api is json, I would like to know how I do for if the api has, for example "userid", it samples a "OK" in the console.

 import requests


url = "https://minhaapi.com/v1/login/username"

querystring = {"countryCode":"BR"}

payload = "username=user&password=teste123&clientVersion=2.4.9-undefined"
headers = {
    'Content-Type': "application/x-www-form-urlencoded",
    'x-requested-with': "XMLHttpRequest",
    'x-tidal-token': "wdgaB1CilGA-S_s2"
    }

response = requests.request("POST", url, data=payload, headers=headers, params=querystring)

print(response.text)



Resposta da minha API(Quando o usuário loga com as informações no curl): 



{"userId":57261722,"sessionId":"5b1ada5b-addf-4804-a55e-a12f36959ff1","countryCode":"BR"}

I tried this code, but I couldn’t:

for url in response.text:
        if 'userId' in url.lower():
            print ("OK")

I just want you to print on the "OK" screen when Curl displays the json response above (that’s when the user logs in), and if a different message appears it prints "Error" on the screen

Answer 1

for url in response.text:
        if 'userId' in url.lower():
            print ("OK")

Here you see if userId is in url.lower(). This will never work in True because the I in userId is uppercase, and you compare that to the lowercase version of url.

url also won’t be a string; response.text is a string, and when iterated over a string with a for, you get individual characters. I recommend you try putting one print(url) before the if to get an idea of what’s going on.

Since your API returns a JSON, you don’t have to deal with response.text, can use the method .json() to turn the answer into a Python dictionary. From there, you can check whether userId is a key in the dictionary:

if 'userId' in response.json():
    print('OK')
else:
    print('ERRO')

---

You should also use a dictionary to pass your payload, not a string:

payload = {'username': 'user',
           'password': 'teste123',
           'clientVersion': '2.4.9-undefined'}