"IndexError: list index out of range"我的 python 脚本

Question

我找到了以下程序，并试图编辑并使其工作。 我正在使用 Python 2.7 的 Kbuntu。 运行脚本时出现以下错误：

rm：无法删除"Devices_Config_Pull.xls"：没有这样的文件或目录 rm：无法删除"Devices_Config_Pull.zip"：没有这样的文件或目录 回溯（最近一次调用）：文件"config_pull.py"，第 17 行， 在 connection = sys.argv[1] 索引错误：列出索引超出范围

import os,sys,string
sys.path.append('/home/user/python/lib/lib/python')
import pexpect
import xlwt
import credential
os.system('rm Devices_Config_Pull.xls') #This will remove previews created spreadsheet
os.system('rm Devices_Config_Pull.zip') #This will remove previews created zip
list_devices=open('list.txt').readlines() #This will read the list of devices that file is on the same location as the script

email, UID, passwd, enable = credential.cred() #This is a module that I created that will store all of credential
*connection = sys.argv[1]
connection = int(connection)*
 ### If the argument is 1 it will telnet into the devices if the argument is 2 it will ssh into the devices
if connection == 1:
        tunnel = 'telnet '
        conmess = 'telnet'
elif connection == 2:
        tunnel = ('ssh -o StrictHostKeyChecking=no -l ' + UID + ' ')
        conmess = 'SSH'
######## This for loop block. is the loop for telnet/ssh into the devices
wbk = xlwt.Workbook() #Create an excel workbook
font = xlwt.Font() 
font.bold = True
#style = .XFStyle()
style.font = font     < lines omitted>

Answer 1

sys.argv 需要从命令行
输入您无法在文件存在之前将其删除。

import os,sys,string
import pexpect
import xlwt
import credential
sys.path.append('/home/user/python/lib/lib/python')
if os.path.isfile('Devices_Config_Pull.xls'):
    os.system('rm Devices_Config_Pull.xls') #This will remove previews created spreadsheet
if os.path.isfile('Devices_Config_Pull.zip'):   
    os.system('rm Devices_Config_Pull.zip') #This will remove previews created zip
list_devices=open('list.txt').readlines() #This will read the list of devices that file is on the same location as the script

email, UID, passwd, enable = credential.cred() #This is a module that I created that will store all of credential
if len(sys.argv) < 2:
    print('need cmd line parameters')
    exit()
*connection = sys.argv[1]
connection = int(connection)*
 ### If the argument is 1 it will telnet into the devices if the argument is 2 it will ssh into the devices
if connection == 1:
        tunnel = 'telnet '
        conmess = 'telnet'
elif connection == 2:
        tunnel = ('ssh -o StrictHostKeyChecking=no -l ' + UID + ' ')
        conmess = 'SSH'
######## This for loop block. is the loop for telnet/ssh into the devices
wbk = xlwt.Workbook() #Create an excel workbook
font = xlwt.Font() 
font.bold = True
#style = .XFStyle()
style.font = font     < lines omitted>