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python Programming Glossary: use

What is a metaclass in Python?

http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python

still unclear to me. So what are metaclasses What do you use them for Concrete examples including snippets much appreciated.. Classes are objects too. Yes objects. As soon as you use the keyword class Python executes it and creates an OBJECT... e.g. print ObjectCreator # you can print a class because it's an object class '__main__.ObjectCreator' def echo o .....

The Python yield keyword explained

http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained

Python yield keyword explained What is the use of the yield keyword in Python What does it do For example I'm.. mylist ... print i 1 2 3 Mylist is an iterable. When you use a list comprehension you create a list and so an iterable mylist.. 3 for i in mylist ... print i 0 1 4 Everything you can use for... in... on is an iterable lists strings files... These..

Common pitfalls in Python [duplicate]

http://stackoverflow.com/questions/1011431/common-pitfalls-in-python

elem For will automate most iteration operations for you. Use enumerate if you really need both the index and the element... DRY Don't mix spaces and tabs Just don't. You would cry. Use object as first parent This is tricky but it will bite you as..

How do you send a HEAD HTTP request in Python?

http://stackoverflow.com/questions/107405/how-do-you-send-a-head-http-request-in-python

the requests library as mentioned by other answers below. Use httplib . import httplib conn httplib.HTTPConnection www.google.com..

Python output buffering

http://stackoverflow.com/questions/107705/python-output-buffering

what are all the ways to disable it Suggestions so far Use the u command line switch Wrap sys.stdout in an object that..

Use different Python version with virtualenv

http://stackoverflow.com/questions/1534210/use-different-python-version-with-virtualenv

different Python version with virtualenv I have a Debian system..

Python - How do I pass a string into subprocess.Popen (using the stdin argument)?

http://stackoverflow.com/questions/163542/python-how-do-i-pass-a-string-into-subprocess-popen-using-the-stdin-argument

cmd shell True bufsize bufsize stdin PIPE .stdin Warning Use communicate rather than stdin.write stdout.read or stderr.read..

How do I ensure that re.findall() stops at the right place?

http://stackoverflow.com/questions/17765805/how-do-i-ensure-that-re-findall-stops-at-the-right-place

regex python 2.7 findall share improve this question Use re.search instead of re.findall if you only want one match s..

How do I download a file over HTTP using Python?

http://stackoverflow.com/questions/22676/how-do-i-download-a-file-over-http-using-python

python requests podcast share improve this question Use urllib2 which comes with the standard library. import urllib2..

Why use pip over easy_install?

http://stackoverflow.com/questions/3220404/why-use-pip-over-easy-install

unless you like stabbing yourself in the face. Use pip. Why use pip over easy_install Doesn't the fault lie with..

What's the proper way to install pip, virtualenv, and distribute for Python?

http://stackoverflow.com/questions/4324558/whats-the-proper-way-to-install-pip-virtualenv-and-distribute-for-python

Install virtualenv into a bootstrap virtual environment. Use the that virtual environment to create more. Since virtualenv.. better to get the latest version Unpack the source tarball Use the unpacked tarball to create a clean virtual environment... and distribute. Install virtualenv into that environment. Use that first bootstrap environment to create more Here is an example..

How to terminate a python subprocess launched with shell=True

http://stackoverflow.com/questions/4789837/how-to-terminate-a-python-subprocess-launched-with-shell-true

subprocess kill process share improve this question Use a process group so as to enable sending a signal to all the..

Django - Set Up A Scheduled Job?

http://stackoverflow.com/questions/573618/django-set-up-a-scheduled-job

management command e.g. python manage.py my_cool_command 2 Use cron on Linux or at on Windows to run my command at the required..

Python's use of __new__ and __init__?

http://stackoverflow.com/questions/674304/pythons-use-of-new-and-init

patterns class design share improve this question Use __new__ when you need to control the creation of a new instance... when you need to control the creation of a new instance. Use __init__ when you need to control initialization of a new instance...

Creating a singleton in python

http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python

Pros It's a true class Auto magically covers inheritance Uses __metaclass__ for its proper purpose And made me aware of it.. base class metaclass share improve this question Use a Metaclass I would recommend Method #2 but you're better off.. in various places is when the singletons are constant . Use of global constants especially enums is widely accepted and..

How to use xpath in Python?

http://stackoverflow.com/questions/8692/how-to-use-xpath-in-python

default namespace handling are easier in other libraries. Use of native code. This can be a pain depending on your how your.. of native code go with libxml2. Sample of libxml2 XPath Use import libxml2 doc libxml2.parseFile tst.xml ctxt doc.xpathNewContext.. ctxt.xpathFreeContext Sample of ElementTree XPath Use from elementtree.ElementTree import ElementTree mydoc ElementTree..

Make your program USE a gui

http://stackoverflow.com/questions/1084514/make-your-program-use-a-gui

your program USE a gui I'd like to write a program able to use other programs..

Using MySQL with Django - Access denied for user '@'localhost

http://stackoverflow.com/questions/11170133/using-mysql-with-django-access-denied-for-user-localhost

DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci USE 'mysql' GRANT ALL PRIVILEGES ON mydb. TO 'mydb_user'@'localhost'.. 'ENGINE' 'django.db.backends.mysql' 'NAME' 'mydb' 'USER' 'mydb_user' 'PASSWORD' 'your_password' 'HOST' '' 'PORT'..

Encoding binary data within XML : alternatives to base64

http://stackoverflow.com/questions/17301940/encoding-binary-data-within-xml-alternatives-to-base64

to worry about unterminated UTF8 chars . Note that we MUST USE the 2 byte or above UTF 8 characters encoding space to reach..

Force python mechanize/urllib2 to only use A requests?

http://stackoverflow.com/questions/2014534/force-python-mechanize-urllib2-to-only-use-a-requests

IPv6 enabled anywhere in my system gentoo compiled with USE ipv6 so I don't think that python has any reason to even try..

How to serialize db.Model objects to json?

http://stackoverflow.com/questions/2114659/how-to-serialize-db-model-objects-to-json

type. return GqlEncoder .encode input save as json.py TO USE import cgi import os import json from google.appengine.ext.webapp..

copy files to nework path or Drive using python

http://stackoverflow.com/questions/2625877/copy-files-to-nework-path-or-drive-using-python

the share to an unused drive letter by calling the NET USE command using os.system assuming you are on Windows os.system.. os.system assuming you are on Windows os.system r NET USE P ComputerName ShareName s USER s s password domain_name user_name.. on Windows os.system r NET USE P ComputerName ShareName s USER s s password domain_name user_name After you mapped the share..

Import a module from a relative path

http://stackoverflow.com/questions/279237/import-a-module-from-a-relative-path

os.path.dirname os.path.abspath __file__ # DO NOT USE __file__ # __file__ fails if script is called in different ways..

Multiple Database Config in Django 1.2

http://stackoverflow.com/questions/3637419/multiple-database-config-in-django-1-2

I cant seem to find an example of how you actually USE the second database in one of your models. When I define a new.. 'ENGINE' 'django.db.backends.mysql' 'NAME' 'modules' 'USER' 'xxx' 'PASSWORD' 'xxx' 'asterisk' 'ENGINE' 'django.db.backends.mysql'.. 'ENGINE' 'django.db.backends.mysql' 'NAME' 'users' 'USER' 'xxxx' 'PASSWORD' 'xxxx' Edit I was reading the documentation..

Best programming language and framework for cross platform desktop application development? [closed]

http://stackoverflow.com/questions/4160162/best-programming-language-and-framework-for-cross-platform-desktop-application-d

is NATIVE LOOK FEEL on both Windows Mac EASE OF USE I maybe wrong about Qt but I only tried it with Ruby and I couldn't..

Step by step setting up python with pip and virtualenv?

http://stackoverflow.com/questions/4986896/step-by-step-setting-up-python-with-pip-and-virtualenv

information from Jesse Noller's article SO YOU WANT TO USE PYTHON ON THE MAC ~ .bash_profile Settings This is probably.. x PY_FW DEFAULT_PY bin virtualenv then export VIRTUALENV_USE_DISTRIBUTE true export WORKON_HOME HOME .virtualenvs fi # Check..

Parallel file matching, Python

http://stackoverflow.com/questions/7623211/parallel-file-matching-python

self.addToQueue self.dir ## HELPER FUNCTION FOR INTERNAL USE ONLY def addToQueue self rootDir for root subFolders files in..

pymysql callproc() appears to affect subsequent selects

http://stackoverflow.com/questions/8218870/pymysql-callproc-appears-to-affect-subsequent-selects

`mydb` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci USE `mydb` # ¦] SET SQL_MODE @OLD_SQL_MODE SET FOREIGN_KEY_CHECKS..

Creating a logging handler to connect to Oracle?

http://stackoverflow.com/questions/935930/creating-a-logging-handler-to-connect-to-oracle

DAMAGES OR # ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE DATA OR PROFITS WHETHER # IN AN ACTION OF CONTRACT NEGLIGENCE.. TORTIOUS ACTION ARISING OUT # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. # # This file is part of the..