2FA system

```py
import pyotp

# User's OTP (e.g., from the app)
user_otp = "123456"  # OTP entered by the user

# Stored secret
secret = "JBSWY3DPEHPK3PXP"  # This would be retrieved from the database

totp = pyotp.TOTP(secret)

# Verify the OTP
if totp.verify(user_otp):
    print("OTP is valid!")
else:
    print("Invalid OTP!")
```
lol, could be useful