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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330
3
부
금융 데이터 과학
"No1": Int32Col(shape=(), dflt=0, pos=1),
"No2": Int32Col(shape=(), dflt=0, pos=2),
"No3": Float64Col(shape=(), dflt=0.0, pos=3),
"No4": Float64Col(shape=(), dflt=0.0, pos=4)}
byteorder := 'little'
chunkshape := (2621,)
In [179]: ll $path*
-rw-r--r-- 1 yves staff 262344490 Oct 19 12:12
/Users/yves/Temp/data/pytab.h5
-rw-r--r-- 1 yves staff 41341436 Oct 19 12:12
/Users/yves/Temp/data/pytabc.h5
In [180]: h5.close()
In [181]: !rm -f $path*
➊
ran_int ndarray
객체 저장
➋
ran_flo ndarray
객체 저장
➌
변동사항이 객체 서술에 반영
이런 객체를
HDF5
데이터베이스에 직접 쓰면 객체에 대한 루프를 돌려
Table
객체에 한 행
씩 데이터를 쓰거나 구조화된
ndarray
객체를 사용하는 것보다 빠르다.
TIP
HDF5
기반 데이터 저장
The
HDF5
계층구조 데이터베이스 ...
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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.