曾鈞淵EXCEL和PYTHON使用集合統計21家會計師事務所
import csv #輸入csv套件comma separated value file = open('TWSE.CSV','r',encoding='utf-8') #打開下載的檔案TWSE.CSV,模式是r讀取, csvreader = csv.reader(file) #將檔案逐列讀入串列變數csvreader header, rows = [], [] #宣告空白串列(陣列,清單) header = next(csvreader) #串列header存放第一列標題 for row in csvreader: #逐列讀檔案、附加append於rows串列 rows.append(row) file.close() #關閉檔案 print(header) n = len(rows) print('上市公司數目',n) for i in range(n):print(i+1,'家公司',rows[i][6]) accountant = set() for i in range(n): accountant.add(rows[i][6]) print(len(accountant))
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回覆刪除colab. https://chunyuan14.blogspot.com/2026/06/javascriptinputcanvas.html
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