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POPython Threading - Creation of a subclass?
 

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  1. POPython Threading - Creation of a subclass?
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    <p>I am having a problem wrapping my brain around the reason for creating a subclass when using threading in python. I've read a number of websites including <a href="http://www.tutorialspoint.com/python/python_multithreading.htm" rel="nofollow">tutorialspoint</a>.</p> <p>The docs say you need to define a new subclass of the Thread class. I have a basic understanding of classes but haven't played with subclasses at all. I haven't had to do anything like this yet with any other modules I've used like os &amp; ftplib. Can anyone point me to a site that may explain this better for a newbie scripter?</p> <pre><code>#!/usr/bin/python import threading class myThread (threading.Thread): </code></pre> <p>I was able to write my own script without creating this subclass and it works so I am not sure why this is stated as a requirement. This is my simple little script I created to help me understand threading initially.</p> <pre><code>#!/usr/bin/python # Import the necessary modules import threading import ftplib # FTP function - Connects and performs directory listing class def ftpconnect(target): ftp = ftplib.FTP(target) ftp.login() print "File list from: %s" % target files = ftp.dir() print files # Main function - Iterates through a lists of FTP sites creating theads def main(): sites = ["ftp.openbsd.org","ftp.ucsb.edu","ubuntu.osuosl.org"] for i in sites: myThread = threading.Thread(target=ftpconnect(i)) myThread.start() print "The thread's ID is : " + str(myThread.ident) if (__name__ == "__main__"): main() </code></pre> <p>Thanks for the help!</p> <p>I am using <a href="http://www.tutorialspoint.com/python/python_multithreading.htm" rel="nofollow">tutorialspoint.com</a> for my reference material. It sounds like your saying I am biting off more than I can chew and I should keep it simple at this point considering I don't need to use the more complicated options yet. This is what the site says:</p> <pre><code>Creating Thread using Threading Module: To implement a new thread using the threading module, you have to do the following: - Define a new subclass of the Thread class. - Override the __init__(self [,args]) method to add additional arguments. - Then, override the run(self [,args]) method to implement what the thread should do when started. Once you have created the new Thread subclass, you can create an instance of it and then start a new thread by invoking the start(), which will in turn call run() method. </code></pre>
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    1. USuser2565554
    1. USuser2565554
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    1. CONote: wnen you want to add more info, you need to edit your own post, not someone else's. Edits to answers are generally rejected (unless you wrote the answer).
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      1. POPython Threading - Creation of a subclass?
      1. USTim Peters
    2. COSorry about that. I am kind of new to this forum and still learning the ropes.
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      1. POPython Threading - Creation of a subclass?
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    3. COYou're doing fine - keep at it :-) Sounds like the tutorial you found covers only one way of using `Thread`. But, as you already know, and as the Python docs say, there are two ways. Pick the way you're most comfortable with! There's no rush to learn everything ;-)
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      1. USTim Peters
 

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