@amrutjk
from pyotp import TOTP
totp=TOTP(totp_code).now()
// totp_code from authenticator app.
obj=SmartConnect(api_key=api_key)
data=obj.generateSession(client_code, mpin, totp)

@amrutjk
from pyotp import TOTP
totp=TOTP(totp_code).now()
// totp_code from authenticator app.
obj=SmartConnect(api_key=api_key)
data=obj.generateSession(client_code, mpin, totp)

The following code is giving None data.
obj.ltpData(exchange='NSE', tradingsymbol='Nifty Bank', symboltoken='99926009')