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我知道有一些話題告訴我們使用.strip()或.rstrip()函數來做到這一點,但它不適合我。我有一個程序,追加到csv文件的新行,但不幸的是,它會生成一個尾隨的逗號... 我試圖刪除它在Python中的.strip()函數,但它不能很好地工作,我做錯了什麼? 這是什麼發生的例子,當我輸入 'T123' 的Bike_No和'05/08/2017' 用於PURCHASE_DATE如何在csv文件的所有行中刪除逗號python
from datetime import datetime
td= datetime.now()
initial_bike_detaillist=[]
deBatt =100
deKM = 0.00
deDate = str(td)[8:10] + "/"+ str(td)[5:7] + "/"+ str(td)[0:4]
print("Option 4: Add abicycle \n")
Bike_No=input("Bike No. :")
Purchase_Date=str(input("Purchase Date:"))
initial_bike_detaillist=[str(Bike_No),str(Purchase_Date),str(deBatt),str(deDate),str(deKM)]#because there is no write function for int
filename="Assignment_Data1.csv"
file=open(filepath + filename,"a")
file.write("\n")
for k in initial_bike_detaillist:
file.write("{},".format(k))
print("Bicycle ({}) has been created".format(Bike_No))
file.close()
file=open(filepath + filename,"r")
for line in file:
line.strip()
print(line)
預期輸出=
Bike No.,Purchase Date,Batt %,Last Maintenance,KM since Last
T101,10/04/2016,55,10/01/2017,25.08
T102,01/07/2016,10,15/05/2017,30.94
T103,15/11/2016,94,13/06/2017,83.16
T104,25/04/2017,58,10/01/2017,25.08
T105,24/05/2017,5,20/06/2017,93.80
T123,04/04/2017,100,05/08/2017,0.0
實際輸出:
Bike No.,Purchase Date,Batt %,Last Maintenance,KM since Last
T101,10/04/2016,55,10/01/2017,25.08
T102,01/07/2016,10,15/05/2017,30.94
T103,15/11/2016,94,13/06/2017,83.16
T104,25/04/2017,58,10/01/2017,25.08
T105,24/05/2017,5,20/06/2017,93.80
T123,04/04/2017,100,05/08/2017,0.0,
`
使用'line.strip( '')' – Gerrat
您可能需要使用[csv.DictWriter ](https://docs.python.org/3/library/csv.html#csv.DictWriter)它是一個標準庫,它使用起來更容易。不要重新發明輪子! – Adonis
在這段代碼中可以修復很多東西。但是,爲了回答你的問題,用'''file.write(','。join(initial_bike_detaillist)''將file.write(「{},」。格式(k) )''' –