我有一个带有date列的单行Dataframe。如何添加10行，每次更改日期14天？

import pandas as pd

df = pd.DataFrame({'date': ['2022-01-01']})

import datetime

for i in range(10):
    date = pd.to_datetime(df['date'].iloc[-1]) + datetime.timedelta(days=14)
    df = df.append({'date': date}, ignore_index=True)

import pandas as pd
import datetime

df = pd.DataFrame({'date': ['2022-01-01']})

for i in range(10):
    date = pd.to_datetime(df['date'].iloc[-1]) + datetime.timedelta(days=14)
    df = df.append({'date': date}, ignore_index=True)

print(df)

         date
0  2022-01-01
1  2022-01-15
2  2022-01-29
3  2022-02-12
4  2022-02-26
5  2022-03-12
6  2022-03-26
7  2022-04-09
8  2022-04-23
9  2022-05-07
10 2022-05-21
11 2022-06-04
12 2022-06-18
13 2022-07-02
14 2022-07-16