import sys for line in sys.stdin: a = line.split() print(int(a[0]) + int(a[1])) import pandas as pd a = pd.read_csv('nowcoder.csv') data = a.groupby('user_id')['date'].count() # 按照user_id统计日期出现的次数 b = a['user_id'].count() # user_id出现的总次数 data.to_csv('test.csv', header=False, encoding='utf-8') data1 ...
