数据可视化 Matplotlib Pandas Python

Question

I have a dataframe that has values like this:

I want to make a multiple line graph that shows the average ride_length for each day for each customer type(member, casual). I tried to groupby day_of_week and member_casual columns like this:
avg_ride_length = df.groupby(['member_casual','day_of_week'])['ride_length'].mean() avg_ride_length.to_frame()
The output is this:

I tried alot but i couldn't make a multiple line graph like this:

Answer 1

If I understand what you are looking for, try this:

import pandas as pd
import matplotlib.pyplot as plt

avg_ride_length = data.groupby(['member_casual','day_of_week'])['ride_length'].mean().to_frame()

avg_ride_length_pivot = pd.pivot_table(avg_ride_length.reset_index(),
               index='day_of_week', columns='member_casual', values='ride_length').plot()
plt.show()