python Programming Glossary: specialWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python the extra argument upperattr_metaclass . There is nothing special about it a method always receives the current instance as first.. vars such as __dict__ etc. Indeed metaclasses are especially useful to do black magic and therefore complicated stuff...
What is different between all these OpenCV Python interfaces? http://stackoverflow.com/questions/10417108/what-is-different-between-all-these-opencv-python-interfaces discussions say they are slower. For imageROI you need special functions like cvSetImageROI . If you find contours cvSeq structures..
The meaning of a single- and a double-underscore before an object name in Python http://stackoverflow.com/questions/1301346/the-meaning-of-a-single-and-a-double-underscore-before-an-object-name-in-python or method is intended to be private. However nothing special is done with the name itself. To quote PEP 8 _single_leading_underscore..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python it was of some other type . basestring is however quite a special case a builtin type that exists only to let you use isinstance..
A Transpose/Unzip Function in Python (inverse of zip) http://stackoverflow.com/questions/19339/a-transpose-unzip-function-in-python-inverse-of-zip question zip is its own inverse Provided you use the special operator. zip 'a' 1 'b' 2 'c' 3 'd' 4 'a' 'b' 'c' 'd' 1 2 3..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained Itertools your best friend The itertools module contains special functions to manipulate iterables. Ever wish to duplicate a..
http://stackoverflow.com/questions/2709821/python-self-explained frown at you when you use something else. self is not special to the code it's just another object. Python could have done.. something else to distinguish normal names from attributes special syntax like Ruby has or requiring declarations like C and Java..
Import a module from a relative path http://stackoverflow.com/questions/279237/import-a-module-from-a-relative-path this in production in several products and works in many special scenarios like scripts called from another directory or executed..
http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat program manipulation with language translation being a special case since 1995 supported by a strong team of computer scientists...
Python UnicodeDecodeError - Am I misunderstanding encode? http://stackoverflow.com/questions/368805/python-unicodedecodeerror-am-i-misunderstanding-encode method for strings too this is a convenience function for special encodings like the zip or rot13 or base64 ones which have nothing..
Python/Tkinter: Interactively validating Entry widget content http://stackoverflow.com/questions/4140437/python-tkinter-interactively-validating-entry-widget-content The trick is to know that you can have Tk pass in special values to your validate command. These values give you all the..
What does `if __name__ == “__main__”:` do? http://stackoverflow.com/questions/419163/what-does-if-name-main-do in it. Before executing the code it will define a few special variables. For example if the python interpreter is running.. module the source file as the main program it sets the special __name__ variable to have a value __main__ . If this file is.. on the command line. After setting up the special variables it will execute the import statement and load those..
Old style and new style classes in Python http://stackoverflow.com/questions/54867/old-style-and-new-style-classes-in-python are fundamental to the new object model like the way special methods are invoked. Others are fixes that could not be implemented..
How do I duplicate sys.stdout to a log file in python? http://stackoverflow.com/questions/616645/how-do-i-duplicate-sys-stdout-to-a-log-file-in-python The nice thing about this is that it requires no special print calls from the rest of the code. The code also runs some..
Creating a singleton in python http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python generally seem to be related to declarative programming especially as used in ORMs. In this situation if you use your Method.. use a metaclass to implement a singleton. A singleton is special because is created only once and a metaclass is the way you.. the singletons are constant . Use of global constants especially enums is widely accepted and considered sane because no matter..
Rolling or sliding window iterator in Python http://stackoverflow.com/questions/6822725/rolling-or-sliding-window-iterator-in-python generator. Default Python iteration can be considered a special case where the window length is 1. I'm currently using the following..
Seeking clarification on apparent contradictions regarding weakly typed languages http://stackoverflow.com/questions/9929585/seeking-clarification-on-apparent-contradictions-regarding-weakly-typed-language or less runtime checking. C# also allows you to in special circumstances do an end run around those restrictions making..
Why print statement is not pythonic? [closed] http://stackoverflow.com/questions/1053849/why-print-statement-is-not-pythonic just hold and therefore is a more regular language. Special cases are not special enough to break the rules has long been..
http://stackoverflow.com/questions/1060796/callable-modules 42 python module share improve this question Special methods are only guaranteed to be called implicitly when they..
python NotImplemented constant http://stackoverflow.com/questions/1062096/python-notimplemented-constant a return NotImplemented Python docs says NotImplemented Special value which can be returned by the 禃ich comparison special methods..
Special (magic) methods in Python [closed] http://stackoverflow.com/questions/1090620/special-magic-methods-in-python magic methods in Python closed What are all the special magic..
Why does subprocess.Popen() with shell=True work differently on Linux vs Windows? http://stackoverflow.com/questions/1253122/why-does-subprocess-popen-with-shell-true-work-differently-on-linux-vs-windows command_string operand instead of from the standard input. Special parameter 0 will be set from the command_name operand and the..
How dangerous is setting self.__class__ to something else? http://stackoverflow.com/questions/13280680/how-dangerous-is-setting-self-class-to-something-else it may appear to work at first but do horrible things Special method definitions in new style classes may not change. In fact..
Implementing __getitem__ in new-style classes http://stackoverflow.com/questions/14102407/implementing-getitem-in-new-style-classes This is documented in the Python datamodel documentation Special method lookup for new style classes For new style classes implicit..
Remove special characters from csv file using python http://stackoverflow.com/questions/15750628/remove-special-characters-from-csv-file-using-python something on this topic already How to replace all those Special Characters with white spaces in python but I can't figure this..
Python 3 Special characters escaping http://stackoverflow.com/questions/17080417/python-3-special-characters-escaping 3 Special characters escaping import urllib from urllib.request import..
Keeping large dictionary in Python affects application performance http://stackoverflow.com/questions/19391648/keeping-large-dictionary-in-python-affects-application-performance certain tuples and dicts from cyclic gc. That may change. Special casing such things isn't free so deciding whether to add more..
Python 3 __getattr__ behaving differently than in Python 2? http://stackoverflow.com/questions/20430637/python-3-getattr-behaving-differently-than-in-python-2 or __getattribute__ hooks. See the documentation on Special Method lookups In addition to bypassing any instance attributes..
http://stackoverflow.com/questions/228181/the-zen-of-python nested. Sparse is better than dense. Readability counts. Special cases aren't special enough to break the rules. Although practicality.. each example. python zen share improve this question Special cases aren't special enough to break the rules. A string of..
How to get self into a Python method without explicitly accepting it http://stackoverflow.com/questions/3453976/how-to-get-self-into-a-python-method-without-explicitly-accepting-it decorator that seems to do the job without modifying any Special attributes of Callable types marked Read only # method decorator..
What does “pythonic” mean? [duplicate] http://stackoverflow.com/questions/454002/what-does-pythonic-mean nested. Sparse is better than dense. Readability counts. Special cases aren't special enough to break the rules. Although practicality..
What are the important language features (idioms) of Python to learn early on http://stackoverflow.com/questions/567251/what-are-the-important-language-features-idioms-of-python-to-learn-early-on nested. Sparse is better than dense. Readability counts. Special cases aren't special enough to break the rules. Although practicality..
http://stackoverflow.com/questions/7816363/if-a-vs-if-a-is-not-none question The statement if A will call A.__nonzero__ see Special method names documentation and use the return value of that..
Passing Parameters to Stored Procedures using PyODBC http://stackoverflow.com/questions/7824161/passing-parameters-to-stored-procedures-using-pyodbc dbo.GetAlarmEventHistoryFrequency_TimeRange tstart tend Special attention should be made to the special symbols and the way..
Python: Optimizing Code Using SQLite3 + Mutagen http://stackoverflow.com/questions/8640701/python-optimizing-code-using-sqlite3-mutagen 0 if 'album' in song else u'Unknown' bitrate 999999 # Special flag for K'atun will know that this is a lossless file year..
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