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python Programming Glossary: justWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python almost all the Python concepts well let's say they're just OO concepts but this one is tricky. I know it has something.. from the Smalltalk language. In most languages classes are just pieces of code that describe how to produce an object. That's.. and int the class that creates integer objects. type is just the class that creates class objects. You see that by checking..
Fastest way to list all primes below N in python http://stackoverflow.com/questions/2068372/fastest-way-to-list-all-primes-below-n-in-python is free for non commercial purposes in which case you can just leave this comment as a credit for my work. If you need this..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained This is the link to the complete source http well adjusted.de ~jrschulz mspace . python iterator generator yield share.. x in range 3 for i in mygenerator ... print i 0 1 4 It is just the same except you used instead of . BUT you can not perform.. a one liner Map Zip without creating another list Then just import itertools . An example Let's see the possible orders..
http://stackoverflow.com/questions/261638/how-do-i-protect-python-code key for symmetric encryption of bank transfers or are you just being paranoid Choose the language that lets you develop the..
http://stackoverflow.com/questions/2709821/python-self-explained use something else. self is not special to the code it's just another object. Python could have done something else to distinguish..
Python “is” operator behaves unexpectedly with integers http://stackoverflow.com/questions/306313/python-is-operator-behaves-unexpectedly-with-integers and 256 when you create an int in that range you actually just get back a reference to the existing object. So it should be..
Flattening a shallow list in Python http://stackoverflow.com/questions/406121/flattening-a-shallow-list-in-python comprehension share improve this question If you're just looking to iterate over a flattened version of the data structure..
What does `if __name__ == “__main__”:` do? http://stackoverflow.com/questions/419163/what-does-if-name-main-do module as a program and not have it execute when someone just wants to import your module and call your functions themselves...
How to improve performance of this code? http://stackoverflow.com/questions/4295799/how-to-improve-performance-of-this-code fCamel fCamel gap bCamel bCamel bCamel bCamel That is just for 3 camels each. I wanted to do this for 4 at least. That..
How to install pip on windows? http://stackoverflow.com/questions/4750806/how-to-install-pip-on-windows a 15915700 362951 There is a simple exe installer which just works http stackoverflow.com a 16377781 362951 If you are an..
How can I make a chain of function decorators in Python? http://stackoverflow.com/questions/739654/how-can-i-make-a-chain-of-function-decorators-in-python I'm not trying to make HTML this way in a real application just trying to understand how decorators and decorator chaining works...
Making a flat list out of list of lists in Python [duplicate] http://stackoverflow.com/questions/952914/making-a-flat-list-out-of-list-of-lists-in-python from 1 to L excluded i.e. I L 2 2 . The list comprehension just generates one list once and copies each item over from its original..
What is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python True Eventually you'll want to add methods to your class. Just define a function with the proper signature and assign it as.. always receives the current instance as first parameter. Just like you have self for ordinary methods. Of course the names..
Common pitfalls in Python [duplicate] http://stackoverflow.com/questions/1011431/common-pitfalls-in-python lists and much more. Cheap DRY Don't mix spaces and tabs Just don't. You would cry. Use object as first parent This is tricky..
Use different Python version with virtualenv http://stackoverflow.com/questions/1534210/use-different-python-version-with-virtualenv virtualenvwrapper share improve this question Just use the p flag when creating your virtualenv instance to specify..
Which programming languages can I use on Android Dalvik? http://stackoverflow.com/questions/1994703/which-programming-languages-can-i-use-on-android-dalvik refer these Example link 1 Example link 2 Example link 3 . Just now i have referred one Article Here in which i found some useful.. Programming Language . For example of this refer this . Just now 2 Aug 2010 i have read an article which describes regarding..
What's the best SOAP client library for Python, and where is the documentation for it? [closed] http://stackoverflow.com/questions/206154/whats-the-best-soap-client-library-for-python-and-where-is-the-documentation-f suited for being a SOAP Client library for Python Edit Just in case it helps I'm using Python 2.6. python soap soap client..
How to implement an efficient infinite generator of prime numbers in Python? http://stackoverflow.com/questions/2211990/how-to-implement-an-efficient-infinite-generator-of-prime-numbers-in-python function in Haskell. So the answer cannot be as naive as Just do a Sieve . First of all you do not know how many consecutive..
nonlocal keyword in Python 2.x http://stackoverflow.com/questions/3190706/nonlocal-keyword-in-python-2-x change them. This is annoying but you can work around it. Just declare a dictionary and store your variables as elements therein...
How to validate IP address in Python? http://stackoverflow.com/questions/319279/how-to-validate-ip-address-in-python ip address share improve this question Don't parse it. Just ask. import socket try socket.inet_aton addr # legal except..
How are Python's Built In Dictionaries Implemented http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented mask PyDictMINSIZE 1 but that's not really important . Just note that the initial slot i that is checked depends on the..
Python UnicodeDecodeError - Am I misunderstanding encode? http://stackoverflow.com/questions/368805/python-unicodedecodeerror-am-i-misunderstanding-encode 5 is latin capital A. 37 is greek capital omega. Just that. In order for a computer to store and or manipulate Unicode..
How do I determine the size of an object in Python? http://stackoverflow.com/questions/449560/how-do-i-determine-the-size-of-an-object-in-python you need it knowing size is almost useless. But why not Just use the sys.getsizeof function defined in the sys module. sys.getsizeof..
http://stackoverflow.com/questions/5276967/python-in-xcode-4-or-xcode-5 process should work for any other interpreted language. Just be sure to change Step 6 and Step 11 accordingly. To any Apple..
What's the difference between list and tuples in Python? http://stackoverflow.com/questions/626759/whats-the-difference-between-list-and-tuples-in-python articles on this issue e.g. Python Tuples are Not Just Constant Lists or Understanding tuples vs. lists in Python ...
Adding Python Path on Windows 7 http://stackoverflow.com/questions/6318156/adding-python-path-on-windows-7 and various other sources hasn't seemed to help Edit Just to clarify further I've appended the path of the Python executable..
Circular (or cyclic) imports in Python http://stackoverflow.com/questions/744373/circular-or-cyclic-imports-in-python thoroughly. Imports are pretty straightforward really. Just remember the following 'import' and 'from xxx import yyy' are..
How do I check if a file exists using Python? http://stackoverflow.com/questions/82831/how-do-i-check-if-a-file-exists-using-python python file filesystems share improve this question Just to add to the answers it's usually safer to use the following..
signals or triggers in SQLAlchemy http://stackoverflow.com/questions/1222208/signals-or-triggers-in-sqlalchemy pre save or post save some entity objects. Thanks. Edit I JUST want equivalent of django signals in SQLAlchemy. python django.. whether you are integrating SQLAlchemy and Django or you JUST want equivalent of django signals in SQLAlchemy. If you want..
Running a python script for a user-specified amount of time? http://stackoverflow.com/questions/2831775/running-a-python-script-for-a-user-specified-amount-of-time of time Sorry this is probably a terrible question. I've JUST started learning python today. I've been reading a Byte of Python...
python subprocess Popen environment PATH? http://stackoverflow.com/questions/5658622/python-subprocess-popen-environment-path look in relative to the current working directory. If you JUST need path evaluation and don't really want to run your command..
Improving Python/django view code http://stackoverflow.com/questions/6245755/improving-python-django-view-code in the case of many many many fields.. but a separate page JUST to do the avatar seems a bit extreme to me. Hopefully whichever..
Appengine: put_async doesn't work (at least in the development server)? http://stackoverflow.com/questions/7244081/appengine-put-async-doesnt-work-at-least-in-the-development-server IN PRODUCTION. I MEAN WHEN I UPLOAD THE APPLICATION IT JUST WORKS FINE. THE PROBLEM IS IN THE DEVELOPMENT SERVER. Here is..
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