I am doing the project “page visits funnel” in “Multiple tables in pandas”. I noticed there is something weird about the files provided. When I merge the dfs like this:
all_data = visits.merge(cart, how=“left”).merge(checkout, how=“left”).merge(purchase, how=“left”)
I get a longer df for all_data than visits even though the merging left thing should make it max as large as visits.
How is this possible?