Tak jak w temacie.
print("\tWelcome to family's system.")
print("\tPlease, log in.")
print("To end this program, please write in username's line \"end\"")
while True:
username= str(input("Username: "))
password= str(input("Password: "))
if username=="User1" and password=="pass":
print("Hello User1")
elif username=="User2" and password=="pass":
print("Hello User2")
elif username=="User3" and password=="pass":
print("Hello User3")
elif username=="User4" and password=="pass":
print("Hello User4")
elif username=="end":
break
else:
print("Fatal error")
A tutaj błąd w Cmd Microsoft Windows [Wersja 6.1.7601] Copyright (c) 2009 Microsoft Corporation. Wszelkie prawa zastrzeżone. C:\Users\Dawid>C:\Users\Dawid\Desktop\lekcja.py Welcome to family's system. Please, log in. To end this program, please write in username's line "end" Username: User1 Traceback (most recent call last): File "C:\Users\Dawid\Desktop\lekcja.py", line 5, in <module> username= str(input("Username: ")) File "<string>", line 1, in <module> NameError: name 'User1' is not defined C:\Users\Dawid>