I have created a new dataframe by doing operations on two others and I would like to remove the false in the new dataframe but it is noted that my information is only in one column and I do not know how to do it.
[![enter image description here](https://i.stack.imgur.com/INhL8.png)](https://i.stack.imgur.com/INhL8.png)
code

```
import pandas as pd

 members = pd.read_csv("https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-09-22/members.csv")
 expeditions = pd.read_csv("https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-09-22/expeditions.csv")

success_members_exp = pd.merge(members, 
expeditions[['expedition_id','termination_reason']], on='expedition_id', how='inner')
success_members_exp_pourcent["pourcent"] = success_members_exp.groupby('expedition_id')['success'].value_counts(normalize=True) * 100
success_members_exp_pourcent.to_frame()

```