题解 | #Python用户的平均提交次数#

import pandas as pd
data = pd.read_csv('Nowcoder.csv', sep=',')
Number_dict = data['Language'].value_counts()
number = Number_dict['Python']
Nowcoder_new = data[['Language','Number_of_submissions']]
total_list = Nowcoder_new.query("Language=='Python'").sum().to_list()
total = total_list[1]
print(round(total/number,1))