Mufin's Python Questions

MufinMcFlufin · Posted: 15 Sep 2011 12:28:55 am Post subject:

Okay, back to working on my IRC bot again.

I finished getting sqlite3 support as per Jonimus's suggestion, and now it will retrieve data from a local database. Now, I'm trying to get my IRC bot to count how many times each person in my channel swears, and then will announce when someone hits a certain number of swears.

I took into account that, people sometimes will swear multiple times in the same line, and made it count the number of times that each person swears in each line with variable swearCount. After that, it increments their number in the database, then stores their total number of times sworn before incrementing as 0x5, and after incrementing as swearTotalNew.

I'm currently trying to get it so it will announce when someone hits a certain number of times sworn, so I made it just something simple, every 5 times, and when you swear the first time. (range(0,1000,5) or 1).

However, I quickly realized that if per se I was at 4, then I swore twice, I would cross right over 5, and my bot wouldn't announce that I went over 5. I'm trying to think of a way in which to make it see that someone has crossed over any of the values in the given list. Any ideas?
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MufinMcFlufin's quote of the week:
"Diapers and Politicians should both be changed often for the same reason."
-Anonymous

KermMartian · Posted: 15 Sep 2011 01:03:36 am Post subject:

Oooh, let's see, that's a good question. I think I have the answer.

1) If the new number is exact. This one's obvious:

MufinMcFlufin · Posted: 15 Sep 2011 03:31:06 am Post subject:

I honestly have no idea how yours works, (and I don't like using code I don't have some understanding of) so I played with the console for a while until I found one that works nicely with one line. It uses the fact that when you divide one integer by another, it returns the floor value (largest integer in the given number) of what should be the dividend, then detects if that changed.

KermMartian · Posted: 15 Sep 2011 11:36:01 am Post subject:

Let me explain how mine works, then.

1) Calculate 5, 10, 15, .... -oldvalue.
2) Calculate 5, 10, 15, .... -newvalue.
3) Say that oldvalue is 4 and newvalue is 6. 5-4 is positive, and 5-6 is negative. If corresponding old/new values changed sign, then the number crossed a multiple-of-five boundary.
4) Multiplying signs, neg to neg is -1*-1=1, pos to pos is 1*1=1, but boundary crossing is 1*-1=-1, so if the list containing the products of the signs has any -1s in it, the number crossed a boundary. You essentially do the same solution, more efficiently (but less fun use of list iteration).
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Kllrnohj · $/=\$ PH34R |\/|3 Joined: 24 May 2005 Posts: 8189

KermMartian · Posted: 15 Sep 2011 11:47:39 pm Post subject:

Want to buy logical "or" operator. Razz

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Kllrnohj · $/=\$ PH34R |\/|3 Joined: 24 May 2005 Posts: 8189

KermMartian · Posted: 16 Sep 2011 01:19:57 am Post subject:

Kllrnohj · $/=\$ PH34R |\/|3 Joined: 24 May 2005 Posts: 8189

KermMartian · Posted: 16 Sep 2011 07:13:38 am Post subject:

MufinMcFlufin · Posted: 20 Oct 2011 12:55:35 pm Post subject:

What are some good modules for trying to make a UI of some sort with windows? I've been trying to make one with Tkinter, but I can't seem to get the hang of it and wanted to see if there are others available, or if Tkinter is my only option.

I'm trying to see if I could make my own UI for my IRC bot at all, so it's easier to manage some of the data for it, and have generally better control over what it's doing, and eventually use that experience to try and make my own IRC client for myself. Which brings me to my second problem. I'd like to figure out how to get my program to both receive messages from the IRC server, and how to send them. Currently, my bot will receive messages via s=socket.socket(); s.recv(1024), however the problem with that is that it will sit at s.recv(1024) until it receives a message. This means that should I get a proper UI for an IRC client running, then I'd have to wait for the client to be pinged to be able to send a message.

Before anyone mentions it or anything like it, I know this is because I'm too used to seeing programs as one line of code after another, and not knowing or being used to trying to run codes parallel inside of the same program.

I'd appreciate any help that doesn't shoo me off to google. ;P
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MufinMcFlufin's quote of the week:
"Diapers and Politicians should both be changed often for the same reason."
-Anonymous

calcdude84se · Power User Joined: 14 Jun 2010 Posts: 408

Most other GUI libraries will not be significantly different from Tkinter. Since Tkinter is a part of the standard install, it might be worth your time to get familiar with it.
Your problem with receive is that the call is blocking; just use s.setblocking(0). Be aware that a socket.Error will be thrown if no data is available.
Feel free to use Google to supplement your knowledge.
(Also, there are more sophisticated ways to handle sockets in a non-blocking manner, but for only one socket it's not worth getting into them. Alternately, you could use threads, with a thread devoted to reading bytes into some shared structure.)
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People think computers will keep them from making mistakes. They're wrong. With computers you make mistakes faster.
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lafferjm · Posted: 20 Oct 2011 08:07:04 pm Post subject:

A couple of gui libraries to take a look at, are wxPython and pygtk.

Edit: Also there is pyqt.
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KermMartian · Posted: 21 Oct 2011 12:22:18 am Post subject:

For threading, you should check out my FeedScreamer project, which you can download here, to get an idea of basic threading. There are easy ways to do non-blocking sockets without threads too; I'll share code from the Python gCnHub application if you'd like.
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calcdude84se · Power User Joined: 14 Jun 2010 Posts: 408

Kerm, like setblocking(0), which I mentioned in my post? Wink

The other option is the select module.
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People think computers will keep them from making mistakes. They're wrong. With computers you make mistakes faster.
-Adam Osborne

KermMartian · Posted: 24 Oct 2011 05:59:13 pm Post subject:

Indeed, setblocking(0) along with a try/catch around EWOULDBLOCK is both the correct and the Pythonic solution, as far as I can tell. Smile

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MufinMcFlufin · Posted: 04 Jan 2012 12:43:16 am Post subject:

Hey guys, I know that mathematically speaking, X/Y/Z = X/(Y*Z), but I was wondering if in Python, the same would be the case when dividing integers. So for instance, when trying to find number of hours when give time, would I be better off using second/60/60 or will seconds/3600 be just as reliable? Also, all of this is ignoring modulus for number of hours exceeding 24.
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MufinMcFlufin's quote of the week:
"Diapers and Politicians should both be changed often for the same reason."
-Anonymous

KermMartian · Posted: 04 Jan 2012 08:39:31 am Post subject:

As long as you're dealing strictly with integers, it will be the same. If you start getting into floating-point numbers, you'll run into precision problems, but with integers you're fine.
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MufinMcFlufin · Posted: 06 Jan 2012 03:37:36 am Post subject:

Alright thanks, appreciate the info.

In the end, this is the bit of code I used it for. I'm sure there's something like this that already exists, but I'd rather make my own code than figure out someone else's code:

KermMartian · Posted: 06 Jan 2012 10:06:21 am Post subject:

Not bad! I feel like there must be a way to combine the 1 and N versions of each of those time units, but the efficient solution hasn't quite jumped out to me yet. It's not horrible as it is now, of course.
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