a simple login system check

The process of simulating the login process of a system user login process

''' When logging in the system, the user needs to first enter the  account. If the account does not exist, output ”Wrong User"
and end the program; When the account number is correct, enter  the password again to verify whether the account password is
consistent with the given account password. If it is  consistent, output ”Success", otherwise output ”Fail" and the 
remaining attempts. The total number of attempts is 3. If all  three attempts are input incorrectly, ”Login Denied" is  output.'''

dic={"aaa" : ["123456",10000],"bbb" : ["888888",5000],"ccc" : ["333333",3000]}
user_name=input("Enter User Name: ")
if user_name in dic.keys():
    for i in range(3):
        pas=input("Enter Password: ")
        if pas==dic[user_name][0]:
            print("Success")
            break
        if (i==2):
            print("Login Denied")
            break
        elif (pas != dic[user_name][0]):
            print(f"Fail({3-i} attempts left): ")
else:
    print("Wrong User")