我正在编写一个循环来在其他地方进行API调用,以检索两个日期之间的财务时间序列数据。鉴于API的限制,我必须制作一系列小日期间隔并使用循环来进行一系列调用。我能够使用以下循环来完成它:
#create a datelist index of smaller intervals
start_date = dtm.datetime(2014,1,1)
end_date = dtm.datetime.now()
datelist = pd.date_range(start=start_date, end=end_date, freq='M')
start_date = datelist[-1].date() +dtm.timedelta(days=1)
datelist.append(pd.date_range(start=start_date, end=end_date, freq='D'))
#get the intial and next date on the list convert to UNIX format and pass the interval on the API call
for n in range(len(datelist)-1):
indateunix = tm.mktime(datelist[n].timetuple())
enddateunix = tm.mktime(datelist[n + 1].timetuple())
templist = self._api_call.returnChartData(ticker= 'FB', period='D',start=indateunix, end=enddateunix)
arr = arr + templist
我想这不是最好的方法,是否有相同循环的pythonic版本?
答案 0 :(得分:-1)
使用WITH cte AS
(
SELECT
*
, ROW_NUMBER() OVER(PARTITION BY date ORDER BY id asc) rn
FROM
temp )
SELECT
id,
date
FROM
rn = 1
:
zip