# -*- coding: utf-8 -*-
"""
Created on Sat May 22 17:34:30 2021

@author: PC
"""

import pandas as pd 
import os 

os.chdir(r'C:\Users\PC\Pytho')

def average_influenza_doses():

    df= pd.read_csv('NISPUF17.csv')
    df=df[['CBF_01', 'P_NUMFLU']]
    df.dropna(inplace= True)
    tup = (df[df['CBF_01']==1]['P_NUMFLU'].mean(), df[df['CBF_01']==2]['P_NUMFLU'].mean())
    return tup