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python Programming Glossary: alPython 2.7 on System, PIP and Virtualenv still using 2.6 - How do I switch them to use 2.7 http://stackoverflow.com/questions/10055260/python-2-7-on-system-pip-and-virtualenv-still-using-2-6-how-do-i-switch-them 2.7 on System PIP and Virtualenv still using 2.6 How do I switch them to use 2.7 I am on.. use 2.7 I am on MacOSx 10.6.8 and I have python 2.7 installed python v produces Python 2.7.2 v2.7.2 8527427914a2 Jun 11.. lib dynload readline.so 2 import readline # dynamically loaded from Library Frameworks Python.framework Versions 2.7..
UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1 http://stackoverflow.com/questions/10561923/unicodedecodeerror-ascii-codec-cant-decode-byte-0xef-in-position-1 'ascii' codec can't decode byte 0xef in position 1 ordinal not in range 128 This is my string ｡･ ･｡ ï¾ I don't see what's.. x89' s1 s.decode 'utf 8' print s1 Traceback most recent call last File stdin line 1 in module UnicodeEncodeError 'ascii'.. codec can't encode characters in position 1 5 ordin al not in range 128 python unicode utf 8 share improve this..
Holiday Calendars, File Formats, et al http://stackoverflow.com/questions/1986207/holiday-calendars-file-formats-et-al Calendars File Formats et al I'm looking for a way to figure out.. Calendars File Formats et al I'm looking for a way to figure out whether a given date is.. out whether a given date is a holiday given some holiday calendar. Specifically you might say is_holiday datetime.date USA..
What is memoization and how can I use it in Python? http://stackoverflow.com/questions/1988804/what-is-memoization-and-how-can-i-use-it-in-python memoization memorandum to be remembered results of method calls based on the method inputs and then returning the remembered.. results. For further details see page 365 of Cormen et al. Introduction To Algorithms 3e . A simple example for computing.. To Algorithms 3e . A simple example for computing factorials using memoization in Python would be something like this factorial_memo..
scoping error in recursive closure http://stackoverflow.com/questions/2516652/scoping-error-in-recursive-closure a 1 if a 0 function2 function2 I get this error UnboundLocalError local variable 'a' referenced before assignment python.. function2 function2 I get this error UnboundLocalError local variable 'a' referenced before assignment python recursion.. messages but that does not explain the root cause. The actual problem is that in python you cannot assign to closed over variables...
Unicode identifiers in Python? http://stackoverflow.com/questions/2649544/unicode-identifiers-in-python in Python I want to build a Python function that calculates and would like to name my summation function Σ. In a.. if so could someone provide an example for it Thanks Original motivation for this was a piece of Clojure code I saw today.. being able to compose operations with symbols would be really helpful. Especially for really complex integrals et al z N..
Why does python use 'magic methods'? http://stackoverflow.com/questions/2657627/why-does-python-use-magic-methods implements a method def __len__ self and then it is called when you write len obj . I was just wondering why objects.. objects don't simply define a len self method and have it called directly as a member of the object e.g. obj.len I'm sure.. methods share improve this question AFAIK len is special in this respect and has historical roots. Here's a quote from..
Test if executable exists in Python? http://stackoverflow.com/questions/377017/test-if-executable-exists-in-python would be just perfect. I don't want to search PATH manually or something involving trying to execute it with Popen al.. or something involving trying to execute it with Popen al and see if it fails that's what I'm doing now but imagine it's.. ' from the different posts I just have to search path manually ans use Jay's answer sorry for the bad formulation about 'which'..
Getting started with secure AWS CloudFront streaming with Python http://stackoverflow.com/questions/6549787/getting-started-with-secure-aws-cloudfront-streaming-with-python they've come from one of my pages. The problem is I'm allergic to the way Amazon have laid things out and I'm just getting.. out and I'm just getting more and more confused. I realise this isn't going to be the best question on StackOverflow.. how to set up a secure CloudFront S3 situation. I would really appreciate your help and am willing once two days has passed..
Extend python/django with c and mod_wsgi with apache http://stackoverflow.com/questions/6840486/extend-python-django-with-c-and-mod-wsgi-with-apache Wed Jul 27 02 33 52 2011 notice child pid 44657 exit signal Segmentation fault 11 ¿Any suggestion The code is # Creates.. p1 p2 str init str end str provider It crashes after we call generador.generar that is an external module developed in C.. crashes after we call generador.generar that is an external module developed in C I have also tried with GDb as @GrahamDumpleton..
Getting python to print in UTF8 on Windows XP with the console http://stackoverflow.com/questions/7014430/getting-python-to-print-in-utf8-on-windows-xp-with-the-console going to happen. The 65001 code page is buggy some stdio calls behave incorrectly and break many tools. Whilst you can register.. tools. Whilst you can register cp65001 as an encoding manually def cp65001 name if name.lower 'cp65001' return codecs.lookup.. codecs.lookup 'utf 8' codecs.register cp65001 and this allows you to print u'some unicode string' it doesn't allow you..
In Python, when should I use a function instead of a method? http://stackoverflow.com/questions/8108688/in-python-when-should-i-use-a-function-instead-of-a-method a function versus when to use a method. Let's take a trivial example a ChessBoard object. Let's say we need some way to get.. a ChessBoard object. Let's say we need some way to get all the legal King moves available on the board. Do we write ChessBoard.get_king_moves.. object. Let's say we need some way to get all the legal King moves available on the board. Do we write ChessBoard.get_king_moves..
Detect & Record Audio in Python http://stackoverflow.com/questions/892199/detect-record-audio-in-python 'silent' threshold return max snd_data THRESHOLD def normalize snd_data Average the volume out MAXIMUM 16384 times float.. spots at the start and end def _trim snd_data snd_started False r array 'h' for i in snd_data if not snd_started and abs i.. and return the data as an array of signed shorts. Normalizes the audio trims silence from the start and end and pads..
What's a good IDE for Python on Mac OS X? http://stackoverflow.com/questions/893162/whats-a-good-ide-for-python-on-mac-os-x CVS but likely to switch to git one of these days et al. What IDE should I use python osx ide share improve this.. either limited functions or slow and unresponsive. Final choice after many years Emacs ropemacs flymake. Rope project.. years Emacs ropemacs flymake. Rope project file open dialog is extremely quick. Rope refactoring and code assist functions..
http://stackoverflow.com/questions/960969/python-comet-server Comet Server I am building a web application that has a real time feed similar to Facebook's newsfeed that I want to update.. I cannot find good information online about production scale users of comet on Python. Has anyone successfully implemented.. StreamHub Comet Server its used by a lot of people personally I use it with a couple of Django sites I run. You will need..
Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad? http://stackoverflow.com/questions/991904/why-is-there-no-gil-in-the-java-virtual-machine-why-does-python-need-one-so-bad is there no GIL in the Java Virtual Machine Why does Python need one so bad I'm hoping someone.. someone can provide some insight as to what's fundamentally different about the Java Virtual Machine that allows it to.. as to what's fundamentally different about the Java Virtual Machine that allows it to implement threads nicely without the..
How to plot a CCDF graph by reading data from “file.txt”? [closed] http://stackoverflow.com/questions/20406171/how-to-plot-a-ccdf-graph-by-reading-data-from-file-txt
BeautifulSoup to scrape street address http://stackoverflow.com/questions/20439868/beautifulsoup-to-scrape-street-address a href http www.salatomatic.com d Tempe 5313 Masjid Al Hijrah and Masjid name b Masjid Al Hijrah b But would like to.. d Tempe 5313 Masjid Al Hijrah and Masjid name b Masjid Al Hijrah b But would like to get the below Denomination b Denomination.. 25 a href http www.salatomatic.com d Tempe 5313 Masjid Al Hijrah img src 'http www.halalfire.com images en photo_small.jpg'..
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