Python runner does not show result output

[lresende]

The following sample code results in nothing when running from python runner

import io
import requests
import pandas as pd

def df_from_url(url):
    data = requests.get(url).content
    df = pd.read_csv(io.StringIO(data.decode('utf-8')))
    return df

df = df_from_url('http://samplecsvs.s3.amazonaws.com/Sacramentorealestatetransactions.csv')
df['price'].mean()