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What is a metaclass in Python?

http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python

unclear to me. So what are metaclasses What do you use them for Concrete examples including snippets much appreciated python.. dynamically Since classes are objects you can create them on the fly like any object. First you can create a class in.. objects. They are the classes' classes you can picture them this way MyClass MetaClass MyObject MyClass You've seen that..

Remove items from a list while iterating in Python

http://stackoverflow.com/questions/1207406/remove-items-from-a-list-while-iterating-in-python

a list of tuples in Python and am attempting to remove them if they meet certain criteria. for tup in somelist if determine..

Python List Comprehension Vs. Map

http://stackoverflow.com/questions/1247486/python-list-comprehension-vs-map

in other cases and most not all pythonistas consider them more direct and clearer. An example of the tiny speed advantage..

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

# if lastadded 1 remove last element and start adding them from tk1 # this way we don't need an if within the last while..

The Python yield keyword explained

http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained

files... These iterables are handy because you can read them as much as you wish but you store all the values in memory and.. Generators are iterators but you can only iterate over them once . It's because they do not store all the values in memory.. twice. You can have a lot of children and you don't want them all stored in memory. And it works because Python does not care..

Import a module from a relative path

http://stackoverflow.com/questions/279237/import-a-module-from-a-relative-path

real python packages do have the __init__.py file inside them here is a safe solution for inclusion of modules relatively..

*args and **kwargs? [duplicate]

http://stackoverflow.com/questions/3394835/args-and-kwargs

kwargs are only by convention but there's no need to use them. You would use args when you're not sure how many arguments.. this case it takes the list or tuple of items and matches them to the arguments in the function. Of course you could have a..

Using global variables in a function other than the one that created them

http://stackoverflow.com/questions/423379/using-global-variables-in-a-function-other-than-the-one-that-created-them

variables in a function other than the one that created them If I create a global variable in one function how can I use..