Python get atm from ltp

 def ATM_CE_AND_PE_COMBIMED(ltp,symbol):

    try:
        monthlyexp = credentials_dict.get('monthlyexp')
        monthlyexp = datetime.strptime(monthlyexp, "%d-%m-%Y")
        monthlyexp = monthlyexp.strftime("%Y-%m-%d")
        pf = pd.read_csv("Instruments.csv")
        filtered_df = pf[(pf['expiry'] == monthlyexp) & (pf['instrument_type'] == 'CE') & (pf["name"]==symbol)]
        if not filtered_df.empty:
            filtered_df["strike_diff"] = abs(
                filtered_df["strike"] - ltp)
            min_diff_row = filtered_df.loc[filtered_df['strike_diff'].idxmin()]
        strike=int(min_diff_row["strike"])
        cesymname=min_diff_row["tradingsymbol"]
        pesymname = cesymname.rsplit('CE', 1)[0] + 'PE'

        ce_ltp=Zerodha_Integration.get_ltp_option(cesymname)
        pe_ltp=Zerodha_Integration.get_ltp_option(pesymname)
        com=ce_ltp+pe_ltp

        return int(com)