Python函数来测试ping [英] Python Function to test ping

问题描述

我试图创建一个函数，我可以定时调用它来检查ping是否正常，并返回结果以便更新屏幕显示。我是python的新手，所以我不完全理解如何返回值或在函数中设置变量。

这是我的代码：

  import os 
 hostname =google.com
 response = os.system（ping -c 1 +主机名）
如果响应== 0：
 pingstatus =网络活动
其他：
 pingstatus =网络错误
  
 
 
 
这是我创建一个函数的尝试： 
 
 
  def check_ping（）：
 hostname =google.com
 response = os.system（ping -c 1+ hostname）
＃然后检查响应... 
如果回应== 0：
 pingstatus =网络活跃
其他：
 pingstatus =网络错误
  
以下是我如何显示 pingstatus ：
  label = font_status.render（％s％pingstatus，1，（0,0,0））
  
所以我在寻找的是如何回复来自函数的pingstatus。任何帮助将不胜感激。
解决方案
它看起来像你想 return 关键字
  def check_ping（）：
 hostname =taylor
 response = os.system （ping -c 1+ hostname）
＃然后检查响应... 
如果响应== 0：
 pingstatus =Network Active
 else：
 pingstatus =网络错误
 
返回pingstatus 
  
您需要在一个变量中捕获/'接收'函数的返回值（pingstatus），如下所示： 
 
 
  pingstatus = check_ping（ ）
  
有关python函数的一些信息： 
 
 
  http://www.tutorialspoint.com/python/python_functions.htm  
 
 
 
  http：// www.learnpython.org/en/Functions  
 
 
 
可能值得通过一个很好的Python入门教程，它将涵盖所有的基础知识。我建议您调查 Udacity.com 和 codeacademy.com  
 
I'm trying to create a function that I can call on a timed basis to check for good ping and return the result so I can update the on-screen display. I am new to python so I don't fully understand how to return a value or set a variable in a function.

Here is my code that works:
import os
hostname = "google.com"
response = os.system("ping -c 1 " + hostname)
if response == 0:
    pingstatus = "Network Active"
else:
    pingstatus = "Network Error"
Here is my attempt at creating a function:
def check_ping():
    hostname = "google.com"
    response = os.system("ping -c 1 " + hostname)
    # and then check the response...
    if response == 0:
        pingstatus = "Network Active"
    else:
        pingstatus = "Network Error"
And here is how I display pingstatus:
label = font_status.render("%s" % pingstatus, 1, (0,0,0))
So what I am looking for is how to return pingstatus from the function. Any help would be greatly appreciated.
解决方案
It looks like you want the return keyword
def check_ping():
    hostname = "taylor"
    response = os.system("ping -c 1 " + hostname)
    # and then check the response...
    if response == 0:
        pingstatus = "Network Active"
    else:
        pingstatus = "Network Error"

    return pingstatus
You need to capture/'receive' the return value of the function(pingstatus) in a variable with something like:
pingstatus = check_ping()
Some info on python functions:

http://www.tutorialspoint.com/python/python_functions.htm

http://www.learnpython.org/en/Functions

It's probably worth going through a good introductory tutorial to Python, which will cover all the fundamentals. I recommend investigating Udacity.com and codeacademy.com

                        
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