按星期分组，另一列为pandas

import pandas as pd

# 创建一个包含日期数据的DataFrame
data = {'date': ['2022-01-01', '2022-01-02', '2022-01-03', '2022-01-04', '2022-01-05', '2022-01-06', '2022-01-07']}
df = pd.DataFrame(data)

# 将日期数据转换为pandas的日期时间格式
df['date'] = pd.to_datetime(df['date'])

# 按星期分组
grouped = df.groupby(df['date'].dt.weekday)

# 打印每个星期的数据
for group, data in grouped:
    print(f"Weekday {group}:")
    print(data)
    print()

Weekday 0:
        date
0 2022-01-01

Weekday 1:
        date
1 2022-01-02

Weekday 2:
        date
2 2022-01-03

Weekday 3:
        date
3 2022-01-04

Weekday 4:
        date
4 2022-01-05

Weekday 5:
        date
5 2022-01-06

Weekday 6:
        date
6 2022-01-07