题解 | #牛客网每日正确与错误的答题次数#
牛客网每日正确与错误的答题次数
https://www.nowcoder.com/practice/bd74b186d5954eb69c00ee804cebe364
import pandas as pd
nowcoder = pd.read_csv('nowcoder.csv')
nowcoder['date']=pd.to_datetime(nowcoder['date'])
nowcoder['year-month-day']=nowcoder['date'].apply(lambda x:x.strftime('%Y-%m-%d'))
a=nowcoder.groupby(['result','year-month-day'])['year-month-day'].count()
print(a)
nowcoder = pd.read_csv('nowcoder.csv')
nowcoder['date']=pd.to_datetime(nowcoder['date'])
nowcoder['year-month-day']=nowcoder['date'].apply(lambda x:x.strftime('%Y-%m-%d'))
a=nowcoder.groupby(['result','year-month-day'])['year-month-day'].count()
print(a)
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