Very new to python - just started actually using it yesterday. I'm running a for loop that scans a text file and copies specific parts of it into variables that will then be put into a class "post". I want to create a new post at the bottom of the loop, named "post0", "post1", and so on, corresponding with the number of times the for loop has been run. This is what I'm trying to use:
postname = globals()['post%s' % s]
And I currently am trying to have it print the name of the post every time it creates one with a simple print(postname). 's' is the variable the for loop runs off of, if that makes sense. It starts at 0 and runs up to the number of lines in the text file, currently 424.
When I run the code, it returns "KeyError: post0". What am I doing wrong?
Also, reading around here it seems that creating variables this way is bad practice. If there is a more efficient way to do it I'd be happy to try that instead, but I'd also like to know how to make this method work just so I understand the concept. Thanks.
Edit: Problem solved! See my answer below.
I created a list postlist = [] outside of the loop, then inside the loop I append the list with a "post_" where "_" is the 's' variable. Looks like this:
postlist.append('post%s' % s)
Python is cool!
I am trying to debug something but this one statement got so much in it so it is very hard to debug it. It has multiple functions and a lambda in it and it won't step into TraceRoute method for me to debug. I am thinking of breaking it into a few lines of codes in order for me to step into the method. What would be correct way to do this!
WService(Of ICService).Use(Sub(svc) traceMessage = svc.TraceRoute(), False)
If you're having trouble with it, make it a subroutine/function until you know it's working correctly.
I'm using GameMaker:Studio Pro and trying to execute a script stored in a variable as below:
script = close_dialog;
script_execute(script);
It doesn't work. It's obviously looking for a script named "script". Anyone know how I can accomplish this?
This question's quite old now, but in case anyone else ends up here via google (as I did), here's something I found that worked quite well and avoids the need for any extra data structures as reference:
scriptToCall = asset_get_index(scr_scriptName);
script_execute(scriptToCall);
The first line here creates the variable scriptToCall and then assigns to it Game Maker's internal ID number for the script you want to call. This allows script_execute to correctly find the script from the ID, which doesn't work if you try to pass it a string containing the script name.
I'm using this to define which scripts should be called in a particular situation from an included txt file, hence the need to convert a string into an addressable script ID!
You seem to have some confusion over how Game Maker works, so I will try to address this before I get around to the actual question.
GML is a rather simple-minded beast, it only knows two data types: strings and numbers. Everything else (objects, sprites, scripts, data structures, instances and so on) is represented with a number in your GML code.
For example, you might have an object called "Player" which has all kinds of fancy events, but to the code Player is just a constant number which you can (e.g.) print out with show_message(string(Player));
Now, the function script_execute(script) takes as argument the ID of the script that should be executed. That ID is just a normal number. script_execute will find the script with that ID in some internal table and then run the script.
In other words, instead of calling script_execute(close_dialog) you could just as well call script_execute(14) if you happened to know that the ID of close_dialog is 14 (although that is bad practice, since it make the code difficult to understand and brittle against ID changes).
Now it should be obvious that assigning the numeric value of close_dialog to a variable first and then calling script_execute on that variable is perfectly OK. In the end, script_execute only cares about the number that is passed, not about the name of the variable that this number comes from.
If you are thinking ahead a bit, you might wonder whether you need script_execute at all then, or if you could instead just do this:
script = close_dialog;
script();
In my opinion, it would be perfectly fine to allow this in the language, but it does not work - the function call operator actually does care about the name of the thing you try to call.
Now with that background out of the way, on to your actual question. If close_dialog is actually a script, your suggested code will work fine. If it is an extension function (or a built-in function -- I don't own Studio so what do I know) then it does not actually have an ID, and you can't call it with script_execute. In fact, you can't even assign close_dialog to a variable then because it does not have any value in GML -- all you can do with it then is call it. To work around this though, you could create a script (say, close_dialog_script which only calls close_dialog, which you can then use just as above.
Edit: Since it does not seem to work anyway, check whether you have a different resource by the name of close_dialog (perhaps a button sprite). This kind of conflict could mean that close_dialog gives you the ID of the sprite, not of the script, while calling the script directly would still work.
After much discussion on the forums, I ended up going with this method.
I wrote a script called script_id()
var sid;
sid = 6; //6 = scriptnotfound script :)
switch (argument0) {
case "load_room":
sid = 0;
break;
case "show_dialog":
sid = 1;
break;
case "close_dialog":
sid = 3;
break;
case "scrExample":
sid = 4;
break;
}
return sid;
So now I can call script_execute(script_id("close_dialog"));
I hate it, but it's better than keeping a spreadsheet... in my opinion.
There's also another way, with execute_string();
Should look like this:
execute_string(string(scriptName) + "();");
I haven't used tcl before and just need to do one trick, I can do it trivially in something like bash but I need it to work cross-platform (e.g. tcl in cygwin on windows).
Can someone suggest a short (5-10) obfuscated function that just returns 0 after taking two string args? It just can't do something like run shell commands that won't work under Mac/Cygwin.
fwiw, why do this: buying some time in writing a test- the thing generating one of the files is broken but I can't change it, making a hack in the TCL test script until I make extensive changes to use a different 'test core' that isn't broken. For now just declare the first file as 'good' if it exists.
I don't understand the requirement for obfuscation, but the simplest way to create a command that takes two arguments and returns 0 is this:
proc theCommandName {firstArgument secondArgument} {
return 0
}
There are all sorts of ways of making things obscure (e.g., a regular expression that doesn't actually match anything, a complicated expression) but as I said before, I don't understand the requirement in that area; I always try to make my code be the simplest thing that could possibly work…
First, i admit all the things i will ask are about our homework but i assure you i am not asking without struggling at least two hours.
Description: We are supposed to add a field called max_cpu_percent to task_struct data type and manipulate process scheduling algorithm so that processes can not use an higher percentage of the cpu.
for example if i set max_cpu_percent field as 20 for the process firefox, firefox will not be able to use more than 20% of the cpu.
We wrote a system call to set max_cpu_percent field. Now we need to see if the system call works or not but we could not get the value of the max_cpu_percent field from a user-spaced program.
Can we do this? and how?
We tried proc/pid/ etc can we get the value using this util?
By the way, We may add additional questions here if we could not get rid of something else
Thanks All
Solution:
The reason was we did not modify the code block writing the output to the proc queries.
There are some methods in array.c file (fs/proc/array.c) we modified the function so that also print the newly added fields value. kernel is now compiling we'll see the result after about an hour =)
It Worked...
(If you simply extended getrlimit/setrlimit, then you'd be done by now…)
There's already a mechanism where similar parts of task_struct are exposed: /proc/$PID/stat (and /proc/$PID/$TID/stat). Look for functions proc_tgid_stat and proc_tid_stat. You can add new fields to the ends of these files.