Estrategia de inversión 3

for i in range(2, 5):
if i != 4:
df_slice = df[:-50*(4-i)]
elif i == 4:
df_slice = df
floor = len(df_slice)-50
roof = len(df_slice)
values = [loaded_models[i-1].predict(np.asarray(df_slice['Price'])[j-Obs:j].reshape(1, Obs, 1)) for j in range(floor, roof)]
Predictions = Predictions + [val[0][0] for val in values]
print i, floor, roof, roof-floor