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python Programming Glossary: allowWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python You can hook on __new__ __init__ and __call__ . Which will allow you to do different stuff. Even if usually you can do it all.. an API. A typical example of this is the Django ORM. It allows you to define something like this class Person models.Model..
Showing the stack trace from a running Python application http://stackoverflow.com/questions/132058/showing-the-stack-trace-from-a-running-python-application it communicates with the running process through a pipe to allow for debugging backgrounded processes etc . Its a bit large to..
“Large data” work flows using pandas http://stackoverflow.com/questions/14262433/large-data-work-flows-using-pandas you don't actually need to define ANY data_columns they allow you to sub select rows based on the column. E.g. something like..
python open built-in function: difference between modes a, a+, w, w+, and r+? http://stackoverflow.com/questions/1466000/python-open-built-in-function-difference-between-modes-a-a-w-w-and-r the documentation implies that all of these will allow writing to the file and says that it opens the files for appending..
Behaviour of increment and decrement operators in Python http://stackoverflow.com/questions/1485841/behaviour-of-increment-and-decrement-operators-in-python interpreted languages adding operators to a language to allow programmers to optimize their code is usually frowned upon especially..
Can't pickle <type 'instancemethod'> when using python's multiprocessing Pool.map() http://stackoverflow.com/questions/1816958/cant-pickle-type-instancemethod-when-using-pythons-multiprocessing-pool-ma or not is to add the infrastructure to your program to allow such methods to be pickled registering it with the copy_reg.. end of the thread shows one perfectly workable approach to allow method pickling unpickling via copy_reg . share improve this..
In Python, how do I determine if an object is iterable? http://stackoverflow.com/questions/1952464/in-python-how-do-i-determine-if-an-object-is-iterable types well designed code improves its flexibility by allowing polymorphic substitution. Duck typing avoids tests using.. module provides some abstract base classes which allow to ask classes or instances if they provide particular functionality..
convert integer to a string in a given numeric base in python http://stackoverflow.com/questions/2267362/convert-integer-to-a-string-in-a-given-numeric-base-in-python to a string in a given numeric base in python Python allows easy creation of an integer from a string of a given base via.. can be called the same way for different bases I want to allow bases other than 2 8 16 Related Python elegant inverse function..
Python: Once and for all. What does the Star operator mean in Python? [duplicate] http://stackoverflow.com/questions/2921847/python-once-and-for-all-what-does-the-star-operator-mean-in-python you can define functions to take x and y arguments this allows a function to accept any number of positional and or named.. return values 'a' s get_a a 1 b 2 # returns 1 this can allow you to specify a large number of optional parameters without..
What are “named tuples” in Python? http://stackoverflow.com/questions/2970608/what-are-named-tuples-in-python There is a handy recipe for mutable recordtypes which allow you to set new values to attributes. from rcdtype import Point..
How are Python's Built In Dictionaries Implemented http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented are implemented as hash tables . Hash tables must allow for hash collisions i.e. even if two keys have same hash value..
What does ** (double star) and * (star) do for python parameters? http://stackoverflow.com/questions/36901/what-does-double-star-and-star-do-for-python-parameters this question The args and kwargs is a common idiom to allow arbitrary number of arguments to functions as described in the.. name one Both idioms can be mixed with normal arguments to allow a set of fixed and some variable arguments def foo kind args..
Python/Tkinter: Interactively validating Entry widget content http://stackoverflow.com/questions/4140437/python-tkinter-interactively-validating-entry-widget-content to your validate command. Here's an example that only allows lowercase and prints all those funky values import Tkinter.. deleted or 1 # P value of the entry if the edit is allowed # s value of entry prior to editing # S the text string being.. ' s' S print v ' s' v print V ' s' V print W ' s' W # only allow if the string is lowercase return S.lower S app MyApp share..
http://stackoverflow.com/questions/472000/python-slots space in objects. Instead of having a dynamic dict that allows adding attributes to objects at anytime there is a static structure.. at anytime there is a static structure which does not allow additions after creation. This saves the overhead of one dict..
Recommendations of Python REST (web services) framework? [closed] http://stackoverflow.com/questions/713847/recommendations-of-python-rest-web-services-framework the mimerender library full disclosure I wrote it they allow you to write nice RESTful webservices import web import json..
http://stackoverflow.com/questions/7933596/django-dynamic-model-fields which makes it simple to understand and database agnostic allows you to effectively attach detach dynamic attribute storage.. You need to be sure to maintain a proper lock in order to allow simultaneous database altering requests. If you are using Michael..
Changing user agent on urllib2.urlopen http://stackoverflow.com/questions/802134/changing-user-agent-on-urllib2-urlopen by a browser to identify itself some HTTP servers only allow requests coming from common browsers as opposed to scripts...
Seeking clarification on apparent contradictions regarding weakly typed languages http://stackoverflow.com/questions/9929585/seeking-clarification-on-apparent-contradictions-regarding-weakly-typed-language language and a memory safe language for the most part . C# allows all three of those forms of strong typing to be violated. The.. compile time checking or less runtime checking. C# also allows you to in special circumstances do an end run around those.. weakly typed language compared with languages which do not allow you to do such an end run. Which is it really It is impossible..
What does the 'u' symbol mean in front of string values? http://stackoverflow.com/questions/11279331/what-does-the-u-symbol-mean-in-front-of-string-values the box to implement the particular policy br br label Allow Broadcast input type checkbox name broadcast label br br label.. input type checkbox name broadcast label br br label Allow ARP input type checkbox name arp label br br label Allow Web.. Allow ARP input type checkbox name arp label br br label Allow Web traffic from external address to internal webserver input..
Installing mod_wsgi on WAMP server running on Windows 7 http://stackoverflow.com/questions/11602653/installing-mod-wsgi-on-wamp-server-running-on-windows-7 images Directory d projects mysite images Order allow deny Allow from all Directory WSGIScriptAlias d projects mysite apache.. apache django.wsgi Directory d projects mysite apache Allow from all Directory VirtualHost 80 DocumentRoot d projects mysite..
Showing the stack trace from a running Python application http://stackoverflow.com/questions/132058/showing-the-stack-trace-from-a-running-python-application prompt for interactive debugging. d '_frame' frame # Allow access to frame object. d.update frame.f_globals # Unless shadowed..
Run python script as daemon at boot time (Ubuntu) http://stackoverflow.com/questions/13718821/run-python-script-as-daemon-at-boot-time-ubuntu upstart Place shebang as first line # usr bin env python Allow execution permissions chmod 755 Start the daemon with superuser..
http://stackoverflow.com/questions/342434/python-logging-in-django python django logging share improve this question Allow me to answer my own question. The underlying problem here is..
Suggestions for a Cron like scheduler in Python? http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python item return True allMatch AllMatch def conv_to_set obj # Allow single integer to be provided if isinstance obj int long return..
http://stackoverflow.com/questions/5537268/django-admin-page-missing-css Directory home django sgel media Order deny allow Allow from all Directory Directory home django sgel apache Order deny.. Directory home django sgel apache Order deny allow Allow from all Directory LogLevel warn Alias media home django sgel..
Pyramid authorization for stored items http://stackoverflow.com/questions/5761617/pyramid-authorization-for-stored-items you can set an __acl__ here for all resources __acl__ Allow 'admin' ALL_PERMISSIONS def __init__ self request self.request.. on the specific object @property def __acl__ self acls Allow 'u d' o.id 'view' for o in self.owners return acls owners relation.. # allow any authenticated user to view Bar objects __acl__ Allow Authenticated 'view' With a setup like this you can then map..
Apache not serving django admin static files http://stackoverflow.com/questions/9500598/apache-not-serving-django-admin-static-files contrib admin media Order allow deny Options Indexes Allow from all IndexOptions FancyIndexing Directory Directory var.. var www html mysite Order allow deny Options Indexes Allow from all IndexOptions FancyIndexing Directory WSGIScriptAlias.. Directory var www html mysite apache Order deny allow Allow from all Directory VirtualHost Here is var www html mysite apache..
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