標普500正三、正二、SPY、負一、負二、負三
SPXL、SPUU、SPY、SPDN、SDS、SPXU
標普500ETF一天走勢
標普500ETF五年走勢
陳昕妤python運算CSV輸出TKINTER投資風險與報酬Markowitz 6月 19, 2025
import csv #輸入csv套件comma separated value f = open('200201to202505.csv','r', encoding="utf-8")#打開下載的檔案SPY.CSV,模式是r讀取, csvreader = csv.reader(f) #將檔案讀入變數csvreader header, rows = list(), list() #宣告空白串列(陣列,清單) firms = set() #建構集合 header = next(csvreader) #串列header儲存檔案第一列 for record in csvreader: #檔案紀錄，逐列row檢視 rows.append(record) #第i筆附加append於rows串列成為rows[i] firms.add(record[0]) #row[0]公司名稱 f.close() #關閉檔案 months = dict() for year in range(2007,2026): months[year]=[str(year*100+month) for month in range(1,13)] count, sum, sumSq, mean, stdev = dict(), dict(), dict(), dict(), dict() for firm in firms: for year in range(2007, 2026): t = (firm, year) #元組(公司,年) count[t] = 0 sum[t] = 0.0 sumSq[t] = 0.0 for row in rows: #字典value增加append元素 for firm in firms: if row[0] == firm...
620有執行嗎？https://cynthiachen59.blogspot.com/2025/06/blog-post.html
回覆刪除https://cynthiachen59.blogspot.com/2025/06/listdictrandom.html
沒有做自己的影片。https://cynthiachen59.blogspot.com/2025/05/powerpoint1mp41mp4.html
https://cynthiachen59.blogspot.com/2025/04/blog-post.html
411.https://cynthiachen59.blogspot.com/2025/04/500spy.html
第一次上課蒙地卡羅模擬。https://cynthiachen59.blogspot.com/2025/03/202537.html