ATM Simulator

class ATM:
    def __init__(self, name, balance, pin):
        self.name     = name
        self.balance  = balance
        self.pin      = str(pin)
        self.attempts = 0
        self.locked   = False

    def verify(self, pin):
        if self.locked:
            print("Card lock ho gaya hai! Bank se contact karo.")
            return False
        if pin == self.pin:
            self.attempts = 0
            return True
        self.attempts += 1
        remaining = 3 - self.attempts
        if remaining == 0:
            self.locked = True
            print("3 baar galat PIN! Card lock ho gaya!")
        else:
            print(f"Galat PIN! {remaining} try bachi hain.")
        return False

    def withdraw(self, amt):
        if amt <= 0 or amt % 100 != 0:
            print("100 ke multiple mein amount dalo!")
            return
        if amt > self.balance:
            print("Balance kam hai!")
            return
        self.balance -= amt
        print(f"Rs{amt:,} nikale gaye!")
        print(f"Bacha balance: Rs{self.balance:,}")

    def deposit(self, amt):
        if amt <= 0:
            print("Amount sahi nahi!")
            return
        self.balance += amt
        print(f"Rs{amt:,} jama ho gaye!")
        print(f"Total balance: Rs{self.balance:,}")

atm = ATM("Rahul Kumar", 25000, 1234)
print("=== Python ATM ===")
pin = input("PIN enter karo: ")
if not atm.verify(pin):
    print("Access denied!")
else:
    print(f"\nNamaste, {atm.name}!")
    while True:
        print(f"\nBalance: Rs{atm.balance:,}")
        print("1. Withdraw")
        print("2. Deposit")
        print("3. Balance check")
        print("4. Baahar jao")
        ch = input("Choice: ")
        if ch == "1": atm.withdraw(int(input("Amount (100 ka multiple): Rs")))
        elif ch == "2": atm.deposit(int(input("Deposit amount: Rs")))
        elif ch == "3": print(f"Balance: Rs{atm.balance:,}")
        elif ch == "4": print("Shukriya!"); break