Pandas 返回python datetime.time对象中的numpy数组
要返回python datetime.time 对象的numpy数组,请在Pandas中使用datetimeindex.time属性。
首先,导入所需的库 -
import pandas as pd
创建一个周期为3,频率为us(即纳秒)的DatetimeIndex。时区为澳大利亚/悉尼 -
datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=3, tz='Australia/Sydney', freq='ns')
显示DatetimeIndex -
print("DateTimeIndex...\n", datetimeindex)只返回不带时区信息的时间戳的时间部分 -
print("\nThe numpy array (time part)..\n",datetimeindex.time)
示例
以下为代码 -
import pandas as pd
# DatetimeIndex with period 3 and frequency as us i.e. nanoseconds
# The timezone is Australia/Sydney
datetimeindex = pd.date_range('2021-10-20 02:30:50', periods=3, tz='Australia/Sydney', freq='ns')
# display DateTimeIndex
print("DateTimeIndex...\n", datetimeindex)
# Returns only the date part of Timestamps without timezone information
print("\nThe numpy array (date part)..\n",datetimeindex.date)
# Returns only the time part of Timestamps without timezone information
print("\nThe numpy array (time part)..\n",datetimeindex.time)输出
以下为代码生成结果 -
DateTimeIndex... DatetimeIndex([ '2021-10-20 02:30:50+11:00', '2021-10-20 02:30:50.000000001+11:00', '2021-10-20 02:30:50.000000002+11:00'], dtype='datetime64[ns, Australia/Sydney]', freq='N') The numpy array (date part).. [datetime.date(2021, 10, 20) datetime.date(2021, 10, 20) datetime.date(2021, 10, 20)] The numpy array (time part).. [datetime.time(2, 30, 50) datetime.time(2, 30, 50) datetime.time(2, 30, 50)]
广告
数据结构
网络
RDBMS
操作系统
Java
iOS
HTML
CSS
Android
Python
C编程
C++
C#
MongoDB
MySQL
JavaScript
PHP