Tuple vs List: Whats the difference?
Hello folks, I am an experienced programmer, but very new to python (2 days). I wanted to ask: what exactly is the difference between a tuple and a list? I'm sure there are some, but I can't seem to find a situation where I can use one but not the other. Thanks in advance, --Shafik -- http://mail.python.org/mailman/listinfo/python-list
Re: Tuple vs List: Whats the difference?
On Jul 11, 12:05 pm, Alexander Schmolck <[EMAIL PROTECTED]> wrote: > Shafik <[EMAIL PROTECTED]> writes: > > Hello folks, > > > I am an experienced programmer, but very new to python (2 days). I > > wanted to ask: what exactly is the difference between a tuple and a > > list? I'm sure there are some, but I can't seem to find a situation > > where I can use one but not the other. > > Try mutating the tuple or using the list as a hashkey. > > 'as Cool thanks guys. --Shafik -- http://mail.python.org/mailman/listinfo/python-list
Re: Tuple vs List: Whats the difference?
Thanks to all of you, Im sure I'll pick your brains some more later down the line. --Shafik -- http://mail.python.org/mailman/listinfo/python-list
Re: Using python with MySQL
On May 1, 10:40 pm, HMS Surprise <[EMAIL PROTECTED]> wrote: > Greetings, > > I need to peform some simple queries via MySQL. Searching the list I > see that folks are accessing it with python. I am very new to python > and pretty new to MySQL too. Would appreciate it if you could point me > to some documentation for accessing MySQL via python. Something of the > "Python and MySQL for Dummies" caliber would be about my speed, but of > course I will be thankful for anything offered. > > Thanks, > > jvh hi, download this module: http://sourceforge.net/projects/mysql-python and look at the tutorial here: http://www.kitebird.com/articles/pydbapi.html -- http://mail.python.org/mailman/listinfo/python-list
Starting a thread before wxPython bootup ... interesting.
Hello folks, I'm having an issue with mixing wxPython and threading ... I realize multi-threading always introduces subtle bugs, but the following scenario is just odd: I start a dummy thread, that does nothing but increment a counter and print its value to the screen, then afterwards, I start the wxPython application. I get nothing but weird behavior: sometimes the gui just crashes, sometimes I get an exception, sometimes it runs for a little but very slowly ... Anyone know whats going on? I have a dual-core T5500, so multi threading is piece of cake for it hardware -wise. Cheers, --Shafik -- http://mail.python.org/mailman/listinfo/python-list
Re: Starting a thread before wxPython bootup ... interesting.
My apologies for not supplying more info, I am at work and I am technically not allowed to surf the web for anything. I am using Python 2.5.1, the latest wx version (2.8.xx, I dont recall exactly). This is running under windows XP under the latest version of cygwin (that could be the source of the issues too). I was just looking for a general way to approach wx and multithreading, not a detailed solution to my problem. There are lots of tutorials online that describe how to perform a time-consuming task in a separate thread in a wx-gui, but nothing that describes any other use cases. The real goal is to start the gui in a different thread, and have the main thread regain control. That seems like a feasible thing to be able to do, though I have been unsuccessful ... if anyone would like to suggest something without being covertly insulting, I'm all ears. Thanks, --Shafik On Oct 4, 5:58 pm, "[david]" <[EMAIL PROTECTED]> wrote: > Since the observed behaviour is clearly undefined, > I forgive you for the poorly specified behaviour > description: asking for a close description of random > behaviour is just ridiculous. > > The most obvious point is that wx is not re-entrant > or thread safe: you have to make it so by using > wx.CallAfter() > > Since you are talking about a bug in your screen > display while using a screen library, it would > also be interesting it you described the environment: > Which operating system? Which windowing system? > Which wx library? Which Python? Which IDE? What code? > > [david] > > Shafik wrote: > > Hello folks, > > > I'm having an issue with mixing wxPython and threading ... I realize > > multi-threading always introduces subtle bugs, but the following > > scenario is just odd: > > > I start a dummy thread, that does nothing but increment a counter and > > print its value to the screen, then afterwards, I start the wxPython > > application. I get nothing but weird behavior: sometimes the gui just > > crashes, sometimes I get an exception, sometimes it runs for a little > > but very slowly ... > > > Anyone know whats going on? I have a dual-core T5500, so multi > > threading is piece of cake for it hardware -wise. > > > Cheers, > > --Shafik -- http://mail.python.org/mailman/listinfo/python-list
