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python Programming Glossary: explanationWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python know with certainty that they need them and don't need an explanation about why . Python Guru Tim Peters The main use case for a metaclass..
About python's built in sort() method http://stackoverflow.com/questions/1517347/about-pythons-built-in-sort-method You'll also want to read this text file for a textual explanation results etc etc. If you prefer reading Java code than C code.. eventually switch to his recent port of timsort . Some explanation of the Java port of timsort is here the diff is here with pointers..
Understanding kwargs in Python http://stackoverflow.com/questions/1769403/understanding-kwargs-in-python Bobby last_name Smith The Python Tutorial contains a good explanation of how it works along with some nice examples. share improve..
Why does Python print unicode characters when the default encoding is ASCII? http://stackoverflow.com/questions/2596714/why-does-python-print-unicode-characters-when-the-default-encoding-is-ascii pieces from various replies I think we can stitch up an explanation. By trying to print an unicode string u' xe9' Python implicitly.. the resulting binary string is ' xc3 xa9' see later explanation . Terminal receives the stream as such and tries to decode 0xc3a9.. 8. But UTF 8 doesn't understand the value 0xe9 see later explanation and is therefore unable to convert it to a unicode code point...
Weighted random selection with and without replacement http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement 0.5 and 0.5 0.6 so return a. Here is some code and another explanation but unfortunately it doesn't use the bitshifting technique nor..
Python variable scope question http://stackoverflow.com/questions/370357/python-variable-scope-question and b printed as expected while c raises an error The only explanation I can come up with is that a local variable c is created by..
UnicodeDecodeError when redirecting to file http://stackoverflow.com/questions/4545661/unicodedecodeerror-when-redirecting-to-file only in the second case or even better give a detailed explanation of what's going on behind the curtain in both cases python..
Python regular expressions - how to capture multiple groups from a wildcard expression? http://stackoverflow.com/questions/464736/python-regular-expressions-how-to-capture-multiple-groups-from-a-wildcard-expr In addition to Douglas Leeder's solution here is the explanation In regular expressions the group count is fixed. Placing a quantifier..
How do you create a daemon in Python? http://stackoverflow.com/questions/473620/how-do-you-create-a-daemon-in-python to this code recipe which has a lot of documentation and explanation along with some useful discussion underneath. However another..
Accessing dict keys like an attribute in Python? http://stackoverflow.com/questions/4984647/accessing-dict-keys-like-an-attribute-in-python Causes a memory leak in Python 2.7.3 Python3 3.2.3 A short explanation on how this works All python objects internally store their..
Regular expression to extract URL from an HTML link http://stackoverflow.com/questions/499345/regular-expression-to-extract-url-from-an-html-link s is the string that you're looking for matches in. Quick explanation of the regexp bits r'...' is a raw string. It stops you having..
Why doesn't Python have static variables? http://stackoverflow.com/questions/592931/why-doesnt-python-have-static-variables provided any code example because I wanted to avoid explanation to simulate static variables. python share improve this question..
int((0.1+0.7)*10) = 7 in several languages. How to prevent this? http://stackoverflow.com/questions/6439140/int0-10-710-7-in-several-languages-how-to-prevent-this knowledge about how it's caused and I'd like some detailed explanation but when I think of all the bugs I must have made over the years..
Django: Redirect to previous page after login http://stackoverflow.com/questions/806835/django-redirect-to-previous-page-after-login used 'next' to redirect to that page. Thanks EDIT 2 My explanation did not seem to be clear so as requested here is my code Lets..
Are there any real alternatives to reStructuredText for Python documentation? http://stackoverflow.com/questions/11163436/are-there-any-real-alternatives-to-restructuredtext-for-python-documentation the File instance is destructed Returns describe type Explanation ... Examples These are written in doctest format and should..
Creating dynamically named variables from user input http://stackoverflow.com/questions/11354214/creating-dynamically-named-variables-from-user-input Chances are there are better ways to solve the problem. Explanation If you were to create dynamically named variables you don't..
http://stackoverflow.com/questions/11957925/psycopg2-mapping-python-list-of-dicts-to-postgres-array-of-composite-type good q_list # # added explicit cast to quotes ^^^^^^^^ Explanation If you run insert into posts VALUES 'animals are good' ARRAY..
How to check for palindrome using Python logic http://stackoverflow.com/questions/17331290/how-to-check-for-palindrome-using-python-logic determine if a given value is a palindrome str n str n 1 Explanation We're checking if the string representation of n equals the..
http://stackoverflow.com/questions/18408247/custom-sort-order-of-list key sort_order.index mylist2 'red' 'blue' 'alpha' Explanation The key parameter in list.sort causes the list to determine..
http://stackoverflow.com/questions/190010/daemon-threads-explanation Threads Explanation In the Python documentation http www.python.org doc 2.5.2 lib..
Comparing characters in a string sequentially in Python http://stackoverflow.com/questions/19562340/comparing-characters-in-a-string-sequentially-in-python matches.append current return .join max matches key len Explanation matches is a list of all substrings with ascending characters...
Python - pyparsing unicode characters http://stackoverflow.com/questions/2339386/python-pyparsing-unicode-characters baajaar AshHvsHt upbhOkHtaa . # 1 2 3 4 5 0 @# Output Explanation This achieves bidirectional alignment. It means the first word..
http://stackoverflow.com/questions/2389846/python-decimals-format ' 0 .3g '.format num For Python 2.5 or older ' .3g' num Explanation 0 tells format to print the first argument in this case num..
how can python function access its own attributes? http://stackoverflow.com/questions/3109289/how-can-python-function-access-its-own-attributes f.func_defaults f Example usage f.x 17 b f del f b 17 Explanation The original poster wanted a solution that does not require..
Class decorators in Python 2.5? http://stackoverflow.com/questions/4307419/class-decorators-in-python-2-5 Foo object pass Or is this maybe just plainly impossible. Explanation I want to use a third party library that heavily uses class..
Packing 4 Integers as ONE BYTE? http://stackoverflow.com/questions/5302374/packing-4-integers-as-one-byte and use bitwise AND i ord x a i 1 b i 1 1 c i 2 7 d i 5 7 Explanation Initially you have 0000000a 0000000b 00000ccc 00000ddd The left..
Python - Intersection of two lists http://stackoverflow.com/questions/642763/python-intersection-of-two-lists c3 filter lambda x x in c1 sublist for sublist in c2 Explanation The filter part takes each sublist's item and checks to see..
Underscore vs Double underscore with variables and methods http://stackoverflow.com/questions/6930144/underscore-vs-double-underscore-with-variables-and-methods use it. Trust me. If you use it you WILL regret it later. Explanation People coming from a C Java background are especially prone..
Removing rows in NumPy efficiently http://stackoverflow.com/questions/7218918/removing-rows-in-numpy-efficiently that's okay for you depends on how big your array is. Explanation The numpy.in1d returns an array the same size as x containing..
How to hide console window in python? http://stackoverflow.com/questions/764631/how-to-hide-console-window-in-python
Algorithm to generate (not quite) spanning set in Python http://stackoverflow.com/questions/9185119/algorithm-to-generate-not-quite-spanning-set-in-python for i in range 1 len lst for x in span lst i yield lst i x Explanation We exploit recursion here to break the problem down. The approach..
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 lambda x y x y l ' 1000 loops best of 3 1.1 msec per loop Explanation the shortcuts based on including the implied use in sum are..
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