import psycopg2 import pandas as pd#本函數用于讀取某只股票的歷史數據，輸入的code不是股票代碼而是公司內部代碼 def data(code):#連接數據庫conn = psycopg2.connect(dbname="db_dev_django", user="db_user",password="密碼", host="ip", port="5432")cur = conn.cursor()#select * from choice_dailyfinancehistory where id='601857' #condition 是篩選條件 # condition="select * from choice_dailyfinancehistory where f_code_id="+codedown='2013-01-01'up='2016-12-31'condition="select * from choice_kwinddayfinancepadjfhistory where f_code_id="+code+ " and f_date >= \'"+down+"'" + " and f_date <= \'"+up+"'" cur.execute(condition)rows = cur.fetchall()#col=['id','f_open','f_close','f_high','f_low','f_volume','f_clear','f_date','f_code_id','f_amount']col=['id','open','close','high','low','volume','amount','date','code_id']df1=pd.DataFrame(rows,columns=col)return df1

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