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python Programming Glossary: you'vehttp://stackoverflow.com/questions/1115313/cost-of-len-function improve this question It's O 1 very fast on every type you've mentioned plus set and others such as array.array . share improve..
Having Django serve downloadable files http://stackoverflow.com/questions/1156246/having-django-serve-downloadable-files actual file serving is handled by Apache Lighttpd. Once you've set up mod_xsendfile integrating with your view takes a few..
How can I login to django using tastypie http://stackoverflow.com/questions/11770501/how-can-i-login-to-django-using-tastypie with. This will bubble up at the DB layer as you've noticed that such a user already exists. What you want is to..
Using property() on classmethods http://stackoverflow.com/questions/128573/using-property-on-classmethods foo._var # raises AssertionError foo._var is unchanged you've simply overwritten the property with a new value. You can also..
How do I create a namespace package in Python? http://stackoverflow.com/questions/1675734/how-do-i-create-a-namespace-package-in-python modules to a given namespace. With the directory structure you've provided Package 1 namespace __init__.py Package 1 namespace..
Should I use urllib or urllib2 or requests? http://stackoverflow.com/questions/2018026/should-i-use-urllib-or-urllib2-or-requests http docs.python requests.org en latest index.html If you've used languages other than python you're probably thinking urllib..
Code a timer in a python GUI in TKinter http://stackoverflow.com/questions/2400262/code-a-timer-in-a-python-gui-in-tkinter given period of time. If that function itself calls after you've set up an automatically recurring event. Here is a working example..
Python: read streaming input from subprocess.communicate() http://stackoverflow.com/questions/2715847/python-read-streaming-input-from-subprocess-communicate If ls ends too fast then the while loop may end before you've read all the data. You can catch the remainder in stdout this..
List filtering: list comprehension vs. lambda + filter http://stackoverflow.com/questions/3013449/list-filtering-list-comprehension-vs-lambda-filter and you shouldn't think much about performance until you've timed your code and found it to be a bottleneck but the difference.. your main code which is where readability really matters you've replaced both list comprehension and filter with a hopefully..
Python decorator makes function forget that it belongs to a class http://stackoverflow.com/questions/306130/python-decorator-makes-function-forget-that-it-belongs-to-a-class C .f As I said this won't work properly in cases where you've inherited a function from a parent class in this case you might..
How to run multiple python version on Windows http://stackoverflow.com/questions/4583367/how-to-run-multiple-python-version-on-windows easy as starting the correct executable. You mention that you've started a python instance from the command line by simply typing.. When it finds the correct file to run it does it. Now if you've installed two python versions 2.5 and 2.6 the path will have..
Python import MySQLdb error - Mac 10.6 http://stackoverflow.com/questions/4730787/python-import-mysqldb-error-mac-10-6 MySQL issue 59006 but without knowing exactly what steps you've performed up until now it is really hard to say how you got..
Javascript equivalent of Python's zip function http://stackoverflow.com/questions/4856717/javascript-equivalent-of-pythons-zip-function e 5 Or you could use a range ... python style function if you've written one already. Eventually you will be able to use ECMAScript..
Regular expression to extract URL from an HTML link http://stackoverflow.com/questions/499345/regular-expression-to-extract-url-from-an-html-link
Python 2.x gotcha's and landmines http://stackoverflow.com/questions/530530/python-2-x-gotchas-and-landmines time.sleep 5 report 1210294772.23 Exercise to make sure you've understood why is this happening def spam eggs ... eggs.append..
Getting started with secure AWS CloudFront streaming with Python http://stackoverflow.com/questions/6549787/getting-started-with-secure-aws-cloudfront-streaming-with-python detail below Create your s3 bucket and upload some objects you've already done this Create a Cloudfront Origin Access Identity..
Creating a singleton in python http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python Singleton will return True . Corrections On another topic you've probably already noticed this but the base class implementation..
What does python file extensions, .pyc .pyd .pyo stand for? http://stackoverflow.com/questions/8822335/what-does-python-file-extensions-pyc-pyd-pyo-stand-for question .py This is normally the input source code that you've written. .pyc This is the compiled bytecode. If you import a..
What is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python picture them this way MyClass MetaClass MyObject MyClass You've seen that type lets you do something like this MyClass type..
Specifying optional dependencies in pypi python setup.py http://stackoverflow.com/questions/10572603/specifying-optional-dependencies-in-pypi-python-setup-py python setup.py pypi share improve this question You've got an incorrect keyword. It's extras_require and it's supposed..
Migrating Django Application to Google App Engine? http://stackoverflow.com/questions/1118761/migrating-django-application-to-google-app-engine Python standard libraries which is not available on GAE. You've identified the glaring difference which is the database so I'll..
How to modify the local namespace in python http://stackoverflow.com/questions/1142068/how-to-modify-the-local-namespace-in-python g python namespaces local share improve this question You've a couple of options. First note that g in your example isn't..
TypeError: __init__() takes exactly 1 argument (3 given) pyXML http://stackoverflow.com/questions/11905148/typeerror-init-takes-exactly-1-argument-3-given-pyxml xml python 2.4 pyxml share improve this question You've got too many _ in the name of __init__. The declaration of your..
Fastest way to convert a dict's keys & values from `unicode` to `str`? http://stackoverflow.com/questions/1254454/fastest-way-to-convert-a-dicts-keys-values-from-unicode-to-str 'Maybe' set 'and' 'a' 'set' 1 'spam' 'eggs' Assumptions You've imported the collections module and can make use of the abstract..
Differences between Framework and non-Framework builds of Python on Mac OS X http://stackoverflow.com/questions/1444543/differences-between-framework-and-non-framework-builds-of-python-on-mac-os-x python osx frameworks share improve this question You've already listed all important advantages of making a framework..
Using a Python Dictionary as a Key (Non-nested) http://stackoverflow.com/questions/1600591/using-a-python-dictionary-as-a-key-non-nested then you may convert your dict into A tuple of pairs. You've already done that in your question. A tuple is required instead..
Read a file on App Engine with Python? http://stackoverflow.com/questions/2630205/read-a-file-on-app-engine-with-python python google app engine share improve this question You've probably declared the file as static in app.yaml. Static files..
http://stackoverflow.com/questions/3073259/python-nose-import-error python nose python import share improve this question You've got an __init__.py in your top level directory. That makes it..
http://stackoverflow.com/questions/5253854/python-import-dll python dll ctypes share improve this question You've tagged the question ctypes and so it sounds like you already..
Trouble Setting Up MySQLdb Module http://stackoverflow.com/questions/5671480/trouble-setting-up-mysqldb-module python module mysql python share improve this question You've set yourself up for headaches by installing the new and forward..
Compute shadow length using PyEphem http://stackoverflow.com/questions/5720633/compute-shadow-length-using-pyephem relative to horizon. Your calculations are almost correct. You've forgot to supply an observer sun ephem.Sun o . I don't know..
Improving Python/django view code http://stackoverflow.com/questions/6245755/improving-python-django-view-code User.objects.get email username The above is redundant. You've got access to the user object already and then trying to fetch..
Python list multiplication: [[…]]*3 makes 3 lists which mirror each other when modified http://stackoverflow.com/questions/6688223/python-list-multiplication-3-makes-3-lists-which-mirror-each-other-when python list multiplication share improve this question You've made 3 references to the same list. a b a.append 42 b 42 You..
Module pytz was already imported http://stackoverflow.com/questions/7239518/module-pytz-was-already-imported it python import pytz share improve this question You've got the package installed in pytz and also as a .egg . Remove..
Appending to 2D lists in Python http://stackoverflow.com/questions/7745562/appending-to-2d-lists-in-python You haven't created three different empty lists. You've created one empty list and then created a new list with three..
Named dtype array: Difference between a[0]['name'] and a['name'][0]? http://stackoverflow.com/questions/9470604/named-dtype-array-difference-between-a0name-and-aname0 can be a confusing area of NumPy for several of reasons. You've constructed an example that touches on several of them. You..
Why substring slicing index out of range works in Python? http://stackoverflow.com/questions/9490058/why-substring-slicing-index-out-of-range-works-in-python python string substring share improve this question You've basically answered your own question. Slicing outside the bounds..
import lxml fails on OSX after (seemingly) successful install http://stackoverflow.com/questions/9854969/import-lxml-fails-on-osx-after-seemingly-successful-install python osx install share improve this question You've installed a newer version of Python 2.7.2 but you also need..
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