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marcap
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marcap
/
marcap_utils.py
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marcap
/
marcap_utils.py
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# -*- coding: utf-8 -*-
# marcap_utils.py - 시가총액 데이터를 위한 유틸함수
from datetime import datetime
import numpy as np
import pandas as pd
def marcap_data(start, end=None, code=None):
'''
지정한 기간 데이터 가져오기
:param datetime start: 시작일
:param datetime end: 종료일 (지정하지 않으면 시작일과 동일)
:param str code: 종목코드 (지정하지 않으면 모든 종목)
:return: DataFrame
'''
start = pd.to_datetime(start)
end = start if end==None else pd.to_datetime(end)
df_list = []
for year in range(start.year, end.year + 1):
try:
parquet_file = 'marcap/data/marcap-%s.parquet' % (year)
df = pd.read_parquet(parquet_file)
# Date 컬럼이 인덱스가 아닌 경우 datetime으로 변환
if 'Date' in df.columns:
df['Date'] = pd.to_datetime(df['Date'])
df_list.append(df)
except Exception as e:
print(e)
pass
df_merged = pd.concat(df_list)
df_merged = df_merged[(start <= df_merged['Date']) & (df_merged['Date'] <= end)]
df_merged = df_merged.sort_values(['Date','Rank'])
if code:
df_merged = df_merged[code == df_merged['Code']]
df_merged.set_index('Date', inplace=True)
return df_merged[df_merged['Volume'] > 0]
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