我是編碼新手，我對這個問題的說明是：“給定以管道分隔的文件 F1 和 F2，其中 F1 包含具有字段 ACCOUNT NUM|PIN|BALANCE 的帳戶，F(xiàn)2 包含交易指令 COMMAND|AMOUNT|ACCOUNT NUM|PIN，執(zhí)行交易，將結(jié)果存儲回 F1。COMMAND 字段將是 add 或 sub 指示從帳戶中添加或減去。不提供正確 PIN 碼或試圖將帳戶置于零以下的交易應(yīng)被忽略?！蔽业妮敵鍪牵?000|1234|100001020|2222|03000|3344|10002020|1234|90000正確的輸出是：1000|1234|110001020|2222|03000|3344|02020|1234|90000我寫的代碼是：import sysF1= sys.argv[1] F2= sys.argv[2]records=[]with open(F1,'r') as fp:  content=fp.readlines()  for row in content:    recList=row.strip("\n").split('|')    records.append(recList)records2=[]with open(F2,'r') as fp:  content=fp.readlines()  for row in content:    recList2=row.strip("\n").split('|')    records2.append(recList2)for i in range(len(records)):  row=records[i]for i in range(len(records2)):  row=records2[i]for row in records and records2:  if records[i][1]==records2[i][3]:    if records2[i][0]=="add":      records[i][2]=int(records[i][2])+int(records2[i][1])    elif records2[i][0]=="sub":      if int(records[i][2])>=int(records2[i][1]):        records[i][2]=int(records[i][2])-int(records2[i][1])      else:        records[i][2]=records[i][2]  else:    breakprint(records)