Question

I have various sums that I've calculated from my dataframe and I want to use matplotlib and make pi chart of percentage of students with a particular nationality.

for ex,
totalStudents=(df.sum())
studentsSwiss=(df1.sum())
studentsIndian=(df2.sum())
studentsChinese=(df3.sum())
etc.
And I want the pi chart to be in percentage. so take in those values convert to percentage of total students of that nationality. I'm using python.

additional info:
df is a dataframe that has a column that sums total Swiss, Indian, Chinese nationalities and the rows would be different schools.

df1 has a column for number of students who are Swiss, and rows would be different schools.

df2 has a column for number of students who are Indian, rows are the different schools.

df3 has a column for number of students who are Chinese, rows are the different schools.

Answer 1

You do not have to convert them into percentages. You can just write the following and it will work properly:

plt.pie([studentsSwiss, studentsIndian, studentsChinese], labels=["Swiss", "Indian", "Chinese"])
plt.show()

It will create a pie plot by calculating the percentages with the given labels. We assume the following is written at the beginning of the code:

import matplotlib.pyplot as plt