题解 | #统一最后刷题日期的格式#

import sys

for line in sys.stdin:
    a = line.split()
    print(int(a[0]) + int(a[1]))
import pandas as pd
df = pd.read_csv('Nowcoder.csv',sep=',',dtype= 'object')

pd.set_option('display.width',200)
pd.set_option('display.max_rows',None)
pd.set_option('display.max_columns',None)

df1 = df.iloc[:,[0,1,8]]

df1['Last_submission_time'] = pd.to_datetime(df1['Last_submission_time'],format = '%Y-%m-%d',errors = 'raise',exact = True)
print(df1)