import pandas as pd

ad_clicks = pd.read_csv('ad_clicks.csv')
print(ad_clicks.head(10))

click_source = ad_clicks.groupby('utm_source').user_id.count().reset_index()
print(click_source)

ad_clicks['is_click'] = ~ad_clicks.ad_click_timestamp.isnull()

clicks_by_source = ad_clicks.groupby(['utm_source', 'is_click']).user_id.count().reset_index()
print(clicks_by_source)

clicks_pivot = clicks_by_source.pivot(columns='is_click', index='utm_source', values='user_id').reset_index()
print(clicks_pivot)

clicks_pivot['percent_clicked'] =