题解 | #牛客网的每日练题量#
牛客网的每日练题量
https://www.nowcoder.com/practice/c5307933102d47c6895679bc62c9e5a9
import pandas as pd
df = pd.read_csv('nowcoder.csv', parse_dates=True)
df.date=pd.to_datetime(df.date,format='%Y-%m-%d')
df.set_index('date')
daily_num=df.groupby('date').question_id.count()
print(daily_num)
