# Front-month IV
jul_call_iv = mibian.BS([nifty_jul_fut, strike_price, interest_rate, days_to_expiry_jul_call],
                        callPrice=jul_call_price).impliedVolatility
print("Front Month IV %.2f" % jul_call_iv, "%")

# Back-month IV
aug_call_iv = mibian.BS([nifty_aug_fut, strike_price, interest_rate, days_to_expiry_aug_call],
                        callPrice=aug_call_price).impliedVolatility
print("Back Month IV %.2f" % aug_call_iv, "%")