March 2022
Beginner to intermediate
796 pages
18h 14m
Korean
Content preview from 파이썬을 활용한 금융 분석(2판) : 파이썬의 기초부터 금융공학, 머신러닝, 퀀트 분석, 매매 시스템 구현까지
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338
3
부
금융 데이터 과학
9.4.3
데이터 읽기
TsTables
로 데이터를 읽는 것은 하드웨어 성능에 의존하기는 하지만 아주 빠르다. 데이터를
메모리에 올리는 것도 마찬가지다. 편리하게도
TsTables
는
DataFrame
객체를 반환한다(그
림
9
-
8
).
In [223]: read_start_dt = dt.datetime(2019, 2, 1, 0, 0)
➊
read_end_dt = dt.datetime(2019, 2, 5, 23, 59)
➋
In [224]: %time rows = ts.read_range(read_start_dt, read_end_dt)
➌
CPU times: user 182 ms, sys: 73.5 ms, total: 255 ms
Wall time: 163 ms
In [225]: rows.info()
➍
<class 'pandas.core.frame.DataFrame'>
DatetimeIndex: 431941 entries, 2019-02-01 00:00:00 to 2019-02-05
23:59:00
Data columns (total 3 columns):
ts1 431941 non-null float64
ts2 431941 non-null float64
ts3 431941 non-null float64
dtypes: float64(3) ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.