How to create a login system.
Building a login system in Python seems simple, but it's incredibly easy to make minor mistakes that completely crash your program!
In this video, I challenge you to a coding game. The first half of the video features a script with 4 critical beginner mistakes. The second half shows the fully working version—but I didn't explain the errors!
Can you spot the differences? Comment your guesses below! 🕵️♂️
(The full breakdown of the 4 mistakes drops in tomorrow's YouTube Short!)
👇 TIMESTAMPS:
0:00 - The Python Login Challenge
0:30 - Inspecting Section 1 (2 Hidden Errors)
1:10 - Inspecting Section 2 (2 Logic Traps)
2:00 - The Working Code Reveal (Testing it out!)
3:15 - The Ultimate Challenge & Outro
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❌ THE BROKEN CODE (Can you spot the 4 bugs?):
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user_database={ "skillswapper":"kljhg4w4w",
"reddy@1#2#w":"123ede" }
def login_system():
username=input("Enter username :").string()
if username not in the user_database:
print("user not found please sign up.")
attempts=5
while attempts is greater than 0:
password=input(f"password for {username}( {attempts} attempts left ")
if password == user_database[username]:
print (f"/n[succes] welcome back user, {username} access granted")
return
attempts-=1
print("incorrect password. try again. /n")
print("[locked]too many attempts. Access denaid")
if_name_="_maim_"
login_system()
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✅ THE CORRECT WORKING CODE:
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user_database = {
"skillswapper": "kljhg4w4w",
"reddy@1#2#w": "123ede"
}
def login_system():
username = input("Enter username: ").strip()
if username not in user_database:
print("User not found. Please sign up.")
return
attempts = 5
while attempts: # Loop runs while attempts remain
password = input(f"Password for {username} ({attempts} attempts left): ")
if password == user_database[username]:
print(f"\n[SUCCESS] Welcome back, {username}! Access granted.")
return
attempts -= 1
print("Incorrect password. Try again.\n")
print("[LOCKED] Too many attempts. Access denied.")
if _name_ == "__main__":
login_system()
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Nesta página do site você pode assistir ao vídeo on-line How to create a login system. duração hora minuto segundo em boa qualidade , que foi baixado pelo usuário Mr Skill Swapper 19 Maio 2026, compartilhe o link com seus amigos e conhecidos, no youtube este vídeo já foi visto 7 vezes e gostou 3 espectadores. Boa visualização!
