IndexError：列表索引超出解析腳本的範圍

新手在這裏，請原諒我的不確定性。IndexError：列表索引超出解析腳本的範圍

我正在嘗試創建一個腳本，它在分析輸出時創建一個名爲ARPips.prn的IP地址文件，以便隨後可以創建結果圖形。我一直在研究這個網站和其他網站上的這個問題，我無法將可能的解決方案應用於我的案例。

這裏是我的腳本：

def ping2(): 

    plat = platform.system() 

    with open('C:\Python26\ARPips.prn', 'r') as f: 
     for line in f: 
      #while True: 

       if plat == "Windows": 
        pingArgs = ["ping", "-n", "1", "-l", "1", "-w", "100", line] 
       elif plat == "Linux": 
        pingArgs = ["ping", "-c", "1", "-l", "1", "-s", "1", "-W", "1"] 
       else: 
        raise ValueError("Unknown platform") 

       ping = subprocess.Popen(pingArgs, 
        stdout = subprocess.PIPE, 
        stderr = subprocess.PIPE, 
        shell=True) 

       out, error = ping.communicate() 

       print out 

       lost = int(re.findall(r"Lost = (\d+)", out)[0]) 
       min = int(re.findall(r"Minimum = (\d+)", out)[0]) 
       max = int(re.findall(r"max = (\d+)", out)[0]) 
       print "Packet loss = %s" % lost 
       print "Maximum = %s" % max 
       print "Minimum = %s" % min 

       x = line.split(";") 
       if len(x) < 14: 
        continue 
       else: 
        print"Invalid line l =", x

我得到的輸出如下：

Pinging 10.10.10.1 with 1 bytes of data: 
Reply from 10.10.10.1: bytes = 1, time = 3 ms, TTL=255 

Ping statistics for 10.10.10.1: 
    Packets: Sent = 1, Received = 1, Lost = 0 (0% loss), 
Approximate round trip times in milliseconds: 
    Minimum = 3ms, Maximum = 3ms, Average = 3ms 

Packet loss = 0 
Maximum = 3 
Minimum = 3 

Pinging 10.10.10.41 with 1 bytes of data: 
Request timed out 

Ping statistics for 10.10.10.41: 
    Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),

錯誤消息：

Traceback (most recent call last): 
    File "C:\Python26\ScapyScripts\main.py", line 114, in ping2 
    min = int(re.findall(r"Minimum = (\d+)", out)[0]) 
    IndexError: list index out of range

現在，如果我註釋掉以下行：

min = int(re.findall(r"Minimum = (\d+)", out)[0]) 
max = int(re.findall(r"max = (\d+)", out)[0]) 
print "Maximum = %s" % max 
print "Minimum = %s" % min

錯誤消失，代碼正常運行。如果有人能幫助我解決這個問題，我會很感激！提前致謝！

來源

2014-02-26 Tom O' Mara

你的正則表達式不匹配，所以re.findall()返回一個空列表：

>>> import re 
>>> re.findall(r"Minimum = (\d+)", 'No such minimum') 
[]

沒有看到你所運行的ping命令的確切輸出，這是很難說爲什麼正則表達式不匹配。

來源

2014-02-26 17:15:56

首先感謝您的關注，我非常感謝您的幫助！我已將輸出添加到我的問題中，您怎麼看？ –

謝謝！分鐘= INT（re.findall（R 「最小值=（\ d +）」，下）[0]）到這一行：：重象你說，通過改變這一行問題是。 findall（r「Minimum =（\ d +）」，out）再次感謝！：d –

IndexError：列表索引超出解析腳本的範圍

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