Python save captcha image from url? Error 401

Question

I have a problem to save captcha as png. Here is my code so far

import requests
url_login = "https://www.hackthis.co.uk/?login"
r_login = requests.post(url_login, {'username': 'darkcyber', 'password': 'secr3tp4s5'})
print r_login.status_code
if "Invalid login details" in r_login.text:
        print "Failed to login"
else:
        print "Login success"
url_captcha = "https://www.hackthis.co.uk/levels/extras/captcha1.php"
r_captcha = requests.get(url_captcha)
#print r_captcha.status_code << 401 instead 200
#whats next?

You need send cookies in second request (GET). Because first login returns session cookies. — Zulfugar Ismayilzadeh, Sep 19 '16 at 06:08

Zulfugar Ismayilzadeh · Accepted Answer · 2016-09-19T06:26:59.150

4

You need download image and save to local as new file.

Here's the sample code:

import requests

r = requests.get('http://url.com/captcha.php')

f = open('yourcaptcha.png', 'wb')
f.write(r.content)
f.close()

UPDATE after your comments:

import requests
url_login = "https://www.hackthis.co.uk/?login"

r_login = requests.post(url_login, {'username': 'darkcyber', 'password': 'secr3tp4s5'})

if "Invalid login details" in r_login.text:
        print "Failed to login"
else:
        print "Login success"

url_captcha = "https://www.hackthis.co.uk/levels/extras/captcha1.php"
r_captcha = requests.get(url_captcha, cookies=r_login.history[0].cookies)

print r_captcha.status_code

f = open('yourcaptcha.png', 'wb')
f.write(r_captcha.content)
f.close()

edited Sep 19 '16 at 06:26

answered Sep 18 '16 at 20:27

Zulfugar Ismayilzadeh

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I get 401 response code instead 200, anyway I have already authenticated. Whats wrong? – Dark Cyber Sep 19 '16 at 05:19
@DarkCyber can you put here the original URL? – Zulfugar Ismayilzadeh Sep 19 '16 at 05:58
updated the question. – Dark Cyber Sep 19 '16 at 06:07
@DarkCyber updated answer. – Zulfugar Ismayilzadeh Sep 19 '16 at 06:27
It works :D, anyway can you tell me about `cookies=r_login.history[0].cookies` more clear, I dont see in documentation. confuse with history[0] – Dark Cyber Sep 19 '16 at 11:52
@DarkCyber, after success login it redirected to main page. That's why I get the cookies of POST request result before redirect (status_code=302). That's why I used history. – Zulfugar Ismayilzadeh Sep 19 '16 at 12:15

Python save captcha image from url? Error 401

1 Answers1