题解 | 牛客网每日正确与错误的答题次数
# 导入库
import pandas as pd
import datetime as dt
# 导入数据
data = pd.read_csv('nowcoder.csv')
# 去掉时间，得到仅含日期的列
data['year-month-day'] = pd.to_datetime(data['date']).dt.date
# 按result year-month-day分组聚合
print(data.groupby(['result', 'year-month-day'])['year-month-day'].count())
不知道为什么用例不通过，但结果是对的
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