Python 3 解法, 执行用时: 788ms, 内存消耗: 524288KB, 提交时间: 2022-07-21

import pandas as pd
Nowcoder = pd.read_csv('Nowcoder.csv', sep=',')
data1=Nowcoder['Num_of_exercise'].var()
data2=Nowcoder['Number_of_submissions'].std()
print(round(data1,2),'\n',round(data2,2))

Python 3 解法, 执行用时: 795ms, 内存消耗: 524288KB, 提交时间: 2022-07-24

import pandas as pd

Nowcoder = pd.read_csv('Nowcoder.csv', sep=',')

# var
print(Nowcoder['Num_of_exercise'].var().round(2))
# std
print(Nowcoder['Number_of_submissions'].std().round(2))

Python 3 解法, 执行用时: 797ms, 内存消耗: 524288KB, 提交时间: 2022-07-24

import pandas as pd

Nowcoder = pd.read_csv('Nowcoder.csv', sep=',')
#print(round(Nowcoder["Num_of_excercise"].var(),2),"\n",round(Nowcoder["Number_of_submissions"].std()),2)
print(round(Nowcoder['Num_of_exercise'].var(),2),'\n',round(Nowcoder['Num_of_exercise'].std()),2)

Python 3 解法, 执行用时: 800ms, 内存消耗: 524288KB, 提交时间: 2022-07-25

import pandas as pd

Nowcoder = pd.read_csv("Nowcoder.csv", sep=",")
print(round(Nowcoder["Num_of_exercise"].var(), 2))
print(round(Nowcoder["Num_of_exercise"].std(), 2))

Python 3 解法, 执行用时: 800ms, 内存消耗: 524288KB, 提交时间: 2022-07-25

import pandas as pd

Nowcoder = pd.read_csv('Nowcoder.csv', sep=',')
a=Nowcoder["Num_of_exercise"].var().round(2)
b=Nowcoder["Number_of_submissions"].std().round(2)
print(a)
print(b)