mesto stariot

import reading as rd
import numpy as np
import pandas as pd
import time
semana3= rd.get_train(3)
semana4 = rd.get_train(4)
semana5 = rd.get_train(5)
train = semana3.append(semana4)
train = train.append(semana5)
del semana3
del semana4
del semana5
semana6 = rd.get_train(6)
semana7 = rd.get_train(7)
semana8 = rd.get_train(8)
train = train.append(semana6)
del semana6
semana9 = rd.get_train(9)
train =train.append(semana7)
del semana7
train =train.append(semana8)
del semana8
train = train.append(semana9)
del semana9
#ovde go imame train
product_client = train[['Producto_ID','Cliente_ID','Demanda_uni_equil']]
del train
product_client = product_client.groupby(['Producto_ID','Cliente_ID']).median()
product_client = product_client.reset_index()
print "Ovde 1"
test = rd.get_test()
print "OVde 2"
test = test[['id','Producto_ID','Cliente_ID']]
izlez = pd.merge(left=test,right=product_client,how='left',on=['Producto_ID','Cliente_ID'])
izlez = izlez.fillna('3')
print test
izlez.to_csv('out.csv')