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python Programming Glossary: constructionWhy is `self` in Python objects immutable? http://stackoverflow.com/questions/1015592/why-is-self-in-python-objects-immutable __init__ behavior in Python is an example of the two step construction design pattern the constructor proper is __new__ it builds and.. initializes the new object. This allows for example the construction of objects that are immutable once constructed in this case..
How dangerous is setting self.__class__ to something else? http://stackoverflow.com/questions/13280680/how-dangerous-is-setting-self-class-to-something-else a derived one. Use __new__ or other mechanisms to hook the construction. Redesign things so you have a single class with some data driven..
When to use Tornado, when to use Twisted / Cyclone / GEvent / other http://stackoverflow.com/questions/13941903/when-to-use-tornado-when-to-use-twisted-cyclone-gevent-other of well integrated native RPC protocols which offer a construction kit for whatever scaling idiom you want to pursue. Most Useful..
Why are python strings and tuples are made immutable? http://stackoverflow.com/questions/1538663/why-are-python-strings-and-tuples-are-made-immutable that a string is immutable makes it easy to lay it out at construction time fixed and unchanging storage requirements. This is also..
http://stackoverflow.com/questions/16637171/pandas-reshaping-data 0 0 0 160922 0 0 1 160923 0 0 0 160924 0 0 0 ie. a logical construction noting which categories each observation row falls into. I'm..
How can you detect if two regular expressions overlap in the strings they can match? http://stackoverflow.com/questions/1849447/how-can-you-detect-if-two-regular-expressions-overlap-in-the-strings-they-can-ma explosion and intersect two NFA directly using the same construction as for DFA if A a B in one NFA you can go from state A to B..
Hitting Maximum Recursion Depth Using Python's Pickle / cPickle http://stackoverflow.com/questions/2134706/hitting-maximum-recursion-depth-using-pythons-pickle-cpickle building a trie to represent a dictionary using a minimal construction algorithm. The input list is 4.3M utf 8 strings sorted lexicographically...
How to use regular expression in lxml xpath? http://stackoverflow.com/questions/2755950/how-to-use-regular-expression-in-lxml-xpath to use regular expression in lxml xpath I'm using construction like this doc parse url .getroot links doc.xpath a text 'some..
Django equivalent for count and group by http://stackoverflow.com/questions/327807/django-equivalent-for-count-and-group-by be done in the .extra call not elsewhere in the queryset construction chain . Also you could just as well say count id instead of..
How does Django Know the Order to Render Form Fields? http://stackoverflow.com/questions/350799/how-does-django-know-the-order-to-render-form-fields the items in the order they are added . After form construction f.fields has a keyOrder attribute which is a list containing..
http://stackoverflow.com/questions/3709870/how-do-libraries-in-different-programming-languages-handle-date-time-timestam final immutable thread safe and cannot be modified after construction. Instances are created via a rich set of Factory methods which..
String concatenation vs. string substitution in Python http://stackoverflow.com/questions/376461/string-concatenation-vs-string-substitution-in-python practical one For a concrete example how should one handle construction of flexible URIs DOMAIN 'http stackoverflow.com' QUESTIONS '..
Efficient Numpy 2D array construction from 1D array http://stackoverflow.com/questions/4923617/efficient-numpy-2d-array-construction-from-1d-array Numpy 2D array construction from 1D array I have an array like this A array 1 2 3 4 5 6..
How to find XML Elements via XPath in Python in a namespace-agnostic way? http://stackoverflow.com/questions/5572247/how-to-find-xml-elements-via-xpath-in-python-in-a-namespace-agnostic-way to make it easier you can create a function to simplify construction of the partial or full wildcard namespace XPath expressions...
Merging a list of time-range tuples that have overlapping time-ranges http://stackoverflow.com/questions/5679638/merging-a-list-of-time-range-tuples-that-have-overlapping-time-ranges ways to make it more efficient Pythonic Eliminate the set construction since the algorithm should prune out duplicates during in the.. over the results use yield to generate the values. Reduce construction of intermediate objects for example move the tuple call to the..
How do I use Python's itertools.groupby()? http://stackoverflow.com/questions/773/how-do-i-use-pythons-itertools-groupby is important. The part I didn't get is that in the example construction groups uniquekeys for k g in groupby data keyfunc groups.append..
python- construction of lattice which traps molecules - doesn't work right http://stackoverflow.com/questions/8038420/python-construction-of-lattice-which-traps-molecules-doesnt-work-right construction of lattice which traps molecules doesn't work right I have..
How can I place a table on a plot in Matplotlib? http://stackoverflow.com/questions/8524401/how-can-i-place-a-table-on-a-plot-in-matplotlib of what I'd like to do Can anyone help with the table construction code Thanks import pylab as plt plt.figure ax plt.gca y 1 2..
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