题解 | #牛客用户刷题量的方差与提交次数的标准差#
牛客用户刷题量的方差与提交次数的标准差
https://www.nowcoder.com/practice/4ca5272bc96c453b9c70fccc039a0679
import pandas as pd
df=pd.read_csv("Nowcoder.csv",sep=',')
a=df.Num_of_exercise.var()
b=df.Number_of_submissions.std()
print(round(a,2),round(b,2),sep='\n')
