How to write a program to input login details and return messages like "login successful","invalid..."&"account blocked"

Question

def login():
uid=input("Username:")
pwd=input("Password:")
counter=list()
if(uid=="ADMINMSBONNIE" and pwd=="Storage1914"):
print("Login successful")
else:
counter.append(1)
if(sum(counter)==3):
print("Account blocked. You have exceeded your log-in attempts")
else:
print("Invalid username/password. Please try again")
print(sum(counter))
login()

login()

I've tried this but it's neither printing "account blocked..." in case of 3 incorrect login attempts nor counting the sum of the counter list. Please suggest any modification to this code.

Answer 1

Whenever login() function is called on incorrect password and username it reinitializes the counter with an empty list.

I would do it something like this ,

https://code.sololearn.com/cjuVqtKw7tDJ/?ref=app