python - 使用列中的日期时间索引和随机值创建 Pandas 数据框

Question

如何创建一个以日期时间为索引、随机值为一列的 pandas 数据框。目前，我有这个:

from datetime import datetime, timedelta

date_today = datetime.now()
date_end = date_today + timedelta(7)

df = pd.DataFrame(columns=['test'])

我该如何从这里开始？

Answer 1

你可以试试这个:

import pandas as pd
import numpy as np
from datetime import datetime, timedelta

date_today = datetime.now()
days = pd.date_range(date_today, date_today + timedelta(7), freq='D')

np.random.seed(seed=1111)
data = np.random.randint(1, high=100, size=len(days))
df = pd.DataFrame({'test': days, 'col2': data})
df = df.set_index('test')
print(df)


test                            
2017-03-22 10:07:41.914019    29
2017-03-23 10:07:41.914019    56
2017-03-24 10:07:41.914019    82
2017-03-25 10:07:41.914019    13
2017-03-26 10:07:41.914019    35
2017-03-27 10:07:41.914019    53
2017-03-28 10:07:41.914019    25
2017-03-29 10:07:41.914019    23