题解 | 牛客网答题正误总数
# 导入库
import pandas as pd
import datetime as dt
# 导入数据
data = pd.read_csv('nowcoder.csv')
# 统计某列不同数据出现的次数---value_count()
#print(data['result'].value_counts())
# 按question_id聚合
# print(data.groupby(['result'])['question_id'].count())
# 统计分组字段出现次数，输出和用例相同
print(data.groupby('result').size())
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