gistfile1.py

import datetime

infile = open(input.name,"r")

lines = infile.readlines()
number_of_lines = len(lines)

lista_data, lista_apple, lista_mic = [], [], []

for line in lines[:-1:-1]:
    line_pieces = line.split(',')
    
    lista_data.append(datetime.datetime.strptime(line_pieces[0],"%Y/%m/%d"))
    lista_apple.append(float(line_pieces[1]))
    lista_mic.append(float(line_pieces[2]))
   
inicial_mic = lista_mic[0]
inicial_apple = lista_apple[0]

print len(lista_apple)

for x in range(0, len(lista_apple)):
    lista_apple[x] = 100*lista_apple[x]/inicial_appla

    
for x in range(0, len(lista_mic)):
    lista_mic[x] = 100*lista_mic[x]/inicial_mic

infile.close()