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What is the maximum recursion depth in Python, and how to increase it?
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It is a guard against a stack overflow, yes. Python (or rather, the CPython implementation) doesn't optimize tail recursion, and unbridled recursion causes stack overflows. You can check the recursion limit with sys.getrecurs...
Determine if variable is defined in Python [duplicate]
... runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I'm looking for something like defined() in Perl or isset() in PHP or defined? in Ruby.
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Django: Get model from string?
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As of Django 3.0, it's AppConfig.get_model(model_name, require_ready=True)
As of Django 1.9 the method is django.apps.AppConfig.get_model(model_name).
-- danihp
As of Django 1.7 the django.db.models.loading is deprecated (to be removed in ...
Determine function name from within that function (without using traceback)
In Python, without using the traceback module, is there a way to determine a function's name from within that function?
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Test if a variable is a list or tuple
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Go ahead and use isinstance if you need it. It is somewhat evil, as it excludes custom sequences, iterators, and other things that you might actually need. However, sometimes you need to behave differently if someone, for instance, passes a string. My preference...
How to create an array containing 1…N
...n you do this instead?
var foo = new Array(45); // create an empty array with length 45
then when you want to use it... (un-optimized, just for example)
for(var i = 0; i < foo.length; i++){
document.write('Item: ' + (i + 1) + ' of ' + foo.length + '<br/>');
}
e.g. if you don't need...
How to write a scalable Tcp/Ip based server
I am in the design phase of writing a new Windows Service application that accepts TCP/IP connections for long running connections (i.e. this is not like HTTP where there are many short connections, but rather a client connects and stays connected for hours or days or even weeks).
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [
...e Google App Engine Web Application Project on Eclipse Kepler on Mac OS X with java version "1.7.0_45"
2 Answers
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Execution time of C program
...t which is declared in <time.h>. To get the CPU time used by a task within a C application, use:
clock_t begin = clock();
/* here, do your time-consuming job */
clock_t end = clock();
double time_spent = (double)(end - begin) / CLOCKS_PER_SEC;
Note that this returns the time as a floating...
Rename multiple files by replacing a particular pattern in the filenames using a shell script [dupli
I need to write a shell script for this. Can someone suggest how to begin?
8 Answers
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