How to navigate to a previous redirect in python requests?

Question

Python

r1 = requests.post('http/станица входа', params = {'login' : 'Rapt', 'pass' : '12345'})
print(r1.url)
>>> http/главная страница
r2 = requests.post('http/главная страница' params = {'searsh': 'Ролики'})
print(r2.url)
>>> http/страница входа

Why didn't I go to the main page during the second transition?

Answer 1

Because it's not logged in.