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',sep=',')
df['date'] = pd.to_datetime(df['date'])
dec_data = df[
(df['date'].dt.year == 2021) &
(df['date'].dt.month == 12)
]
dec_data['date'] = dec_data['date'].dt.date
print(dec_data.groupby('date').size())
