Question

我想遍历startDayValStr，endDayValStr，startTimeValStr，endTimeValStr中的每个值，并将这些值用作URL字符串中的参数。我将所有其他值用作我的end变量，即06:00:00是startTimeValStr值，而07:00:00是endTimeValStr值。

如何正确构造循环以在time_param中使用这些变量？

我希望time_param看起来像这样?start=05-05-2019T06:00:00Z&end=05-05-2019T07:00:00Z

这是我当前的代码：

import pandas as pd

rng = pd.date_range(pd.Timestamp('2019-05-05' + ' ' + "'06:00:00'"),periods=25, freq='H')

 dtSeries =  pd.Series(rng.format())

 ddf = dtSeries.to_frame(name='Date')
 ddf['time'] = pd.to_datetime(ddf['Date'])
 dateDF = ddf['dates'] = ddf['time'].dt.date
 timeDF = ddf['dates'] = ddf['time'].dt.time

 startDayVal= dateDF[::2]
 endDayVal = dateDF[1::2]

 startTimeVal= timeDF[::2]
 endTimeVal = timeDF[1::2]

 startDayValStr = (startDayVal.to_string())
 endDayValStr =(endDayVal.to_string())

 startTimeValStr = (startTimeVal.to_string())
 endTimeValStr = (endTimeVal.to_string())

 for startDate, endDate, startTime, endTime in zip (startDayValStr, endDayValStr, startTimeValStr, endTimeValStr):
          time_param = '?start='+ startDate  +'T'+startTime + 'Z' + '&end='+ endDate  + endTime + 'Z'
          print time_param

Answer 1

如果使用Python 3.x，请尝试使用string.format的date.strftime方法：

rng = pd.date_range(pd.Timestamp('2019-05-05' + ' ' + "'06:00:00'"),
                    periods=25, freq='H')

for start, end in zip(rng[::2], rng[1::2]):
    time_param = '?start={}&end={}'.format(start.strftime('%d-%m-%YT%H:%M:%SZ'),
                                           end.strftime('%d-%m-%YT%H:%M:%SZ'))
    print(time_param)

[出]

?start=05-05-2019T06:00:00Z&end=05-05-2019T07:00:00Z
?start=05-05-2019T08:00:00Z&end=05-05-2019T09:00:00Z
?start=05-05-2019T10:00:00Z&end=05-05-2019T11:00:00Z
?start=05-05-2019T12:00:00Z&end=05-05-2019T13:00:00Z
?start=05-05-2019T14:00:00Z&end=05-05-2019T15:00:00Z
?start=05-05-2019T16:00:00Z&end=05-05-2019T17:00:00Z
?start=05-05-2019T18:00:00Z&end=05-05-2019T19:00:00Z
?start=05-05-2019T20:00:00Z&end=05-05-2019T21:00:00Z
?start=05-05-2019T22:00:00Z&end=05-05-2019T23:00:00Z
?start=06-05-2019T00:00:00Z&end=06-05-2019T01:00:00Z
?start=06-05-2019T02:00:00Z&end=06-05-2019T03:00:00Z
?start=06-05-2019T04:00:00Z&end=06-05-2019T05:00:00Z

Answer 2

通过一些字符串操作，您可以获得结果

startDayValStr = (startDayVal.to_string(index=False)).replace(' ','').split('\n')
endDayValStr =(endDayVal.to_string(index=False)).replace(' ','').split('\n')


startTimeValStr = (startTimeVal.to_string(index=False)).replace(' ','').split('\n')
endTimeValStr = (endTimeVal.to_string(index=False)).replace(' ','').split('\n')

for startDate, endDate, startTime, endTime in zip (startDayValStr, endDayValStr, startTimeValStr, endTimeValStr):
  time_param = '?start='+startDate+'T'+startTime+'Z'+'&end='+endDate+endTime + 'Z'
  print time_param

输出

?start=2019-05-05T06:00:00Z&end=2019-05-0507:00:00Z
?start=2019-05-05T08:00:00Z&end=2019-05-0509:00:00Z
?start=2019-05-05T10:00:00Z&end=2019-05-0511:00:00Z
?start=2019-05-05T12:00:00Z&end=2019-05-0513:00:00Z
?start=2019-05-05T14:00:00Z&end=2019-05-0515:00:00Z
?start=2019-05-05T16:00:00Z&end=2019-05-0517:00:00Z
?start=2019-05-05T18:00:00Z&end=2019-05-0519:00:00Z
?start=2019-05-05T20:00:00Z&end=2019-05-0521:00:00Z
?start=2019-05-05T22:00:00Z&end=2019-05-0523:00:00Z
?start=2019-05-06T00:00:00Z&end=2019-05-0601:00:00Z
?start=2019-05-06T02:00:00Z&end=2019-05-0603:00:00Z
?start=2019-05-06T04:00:00Z&end=2019-05-0605:00:00Z

如何使用循环从Pandas数据框中获取值？

2 个答案: