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python Programming Glossary: ieWhy is if not someobj: better than if someobj == None: in Python? http://stackoverflow.com/questions/100732/why-is-if-not-someobj-better-than-if-someobj-none-in-python other . Otherwise the object are compared for identity ie. they are reference to the same object as can be tested by the.. sentinel values None meaning not initialized for a member field for exemple or when using the getattr or the __getitem__ methods..
Is there an easy way to pickle a python function (or otherwise serialize its code)? http://stackoverflow.com/questions/1253528/is-there-an-easy-way-to-pickle-a-python-function-or-otherwise-serialize-its-cod objects which can then be reassembled into a function. ie import marshal def foo x return x x code_string marshal.dumps..
Django Static Files results in 404 http://stackoverflow.com/questions/14799835/django-static-files-results-in-404 'django.contrib.staticfiles.finders.AppDirectoriesFinder' # 'django.contrib.staticfiles.finders.DefaultStorageFinder'.. of staticfiles and if you're running Django 1.3 I believe this is the way your settings.py should look like when refering.. store your static files # in apps' static subdirectories and in STATICFILES_DIRS. # Example home media media.lawrence.com..
Read Specific Columns from csv file with Python csv http://stackoverflow.com/questions/16503560/read-specific-columns-from-csv-file-with-python-csv Name Zip and Phone . Code I've looked at has led me to believe I can call the specific column by its corresponding number.. call the specific column by its corresponding number so ie Name would correspond to 2 and iterating through each row using..
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 tags then you should consider changing it to be non greedy ie . print re.findall r' title . title ' s # 'aaa' 'aaa2' 'aaa3'..
How can I auto-populate a PDF form in Django/Python? http://stackoverflow.com/questions/1890570/how-can-i-auto-populate-a-pdf-form-in-django-python design the PDF in Acrobat or whatever and mark the form fields and take note of the field names I'm not sure exactly how.. or whatever and mark the form fields and take note of the field names I'm not sure exactly how this is done our designer does.. our designer does this step . Let's say your form has fields name and telephone . Use fdfgen to create a FDF file from..
What's a good equivalent to python's subprocess.check_call that returns the contents of stdout? http://stackoverflow.com/questions/2924310/whats-a-good-equivalent-to-pythons-subprocess-check-call-that-returns-the-cont method that matches the interface of subprocess.check_call ie it throws CalledProcessError when it fails is synchronous c..
Turn a string into a valid filename in Python http://stackoverflow.com/questions/295135/turn-a-string-into-a-valid-filename-in-python share improve this question This whitelist approach ie allowing only the chars present in valid_chars will work if..
Python lazy property decorator http://stackoverflow.com/questions/3012421/python-lazy-property-decorator and refactored a lot of instance attributes to be lazy ie. not be initialised in the constructor but only upon first read...
http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat of patterns could I enforce on the code to make it easier to translate to another programming language I am setting.. with are PHP and Python Python to PHP should be easier to start with but ideally I would be able to add other languages.. conventions. This should make translation somewhat easier. I am also looking at IOC and dependency injection as they..
How can I represent an 'Enum' in Python? http://stackoverflow.com/questions/36932/how-can-i-represent-an-enum-in-python have been added to Python 3.4 as described in PEP 435 . ie. from enum import Enum Animal Enum 'Animal' 'ant bee cat dog'.. class Animals Enum ant 1 bee 2 cat 3 dog 4 In earlier versions one way of accomplishing enums is def enum enums return..
Suggestions for a Cron like scheduler in Python? http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python t Return True if this event should trigger at the specified datetime return t.minute in self.mins and t.hour in self.hours.. Note Not thoroughly tested Then your CronTab can be specified in normal python syntax as c CronTab Event perform_backup 0.. check on each event. There are probably some subtleties with daylight savings time timezones to be wary of though ...
http://stackoverflow.com/questions/4685217/parse-raw-http-headers a string of raw HTTP and I would like to represent the fields in an object. Is there any way to parse the individual headers.. headers from an HTTP string 'GET search sourceid chrome ie UTF 8 q ergterst HTTP 1.1 r nHost www.google.com r nConnection..
Python - Convert UTC datetime string to local datetime http://stackoverflow.com/questions/4770297/python-convert-utc-datetime-string-to-local-datetime data is being stored on appengine's BigTable and when retrieved it comes out as a string like so 2011 01 21 02 37 21 How.. timezone information How do you typically store tz info ie 5 00 or EST etc etc I'm sure the answer to my first question..
How to write the Fibonacci Sequence in Python http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python Instead of returning the Fibonacci numbers between a range ie. startNumber 1 endNumber 20 should only those numbers between.. program to display all Fibonacci numbers between a range ie. startNumber 1 endNumber 20 displays First 20 Fibonacci numbers.. Sequence by a user inputted start number and end number ie. startNumber 20 endNumber 100 and it will display only the numbers..
How do I execute a string containing Python code in Python? http://stackoverflow.com/questions/701802/how-do-i-execute-a-string-containing-python-code-in-python share improve this question For statements use exec ie. mycode 'print hello world ' exec mycode Hello world When you..
http://stackoverflow.com/questions/84340/why-learn-perl-python-ruby-if-the-company-is-using-c-c-sharp-or-java-as-the from the obvious that the employee will have broader view the employers are usually looking for some real benefit. c#.. software you are developing. Sometimes the task is one off ie compare this file to the database and let me know the differences... database and let me know the differences. It is a lot easier to do text parsing in Perl Ruby Python than it is in Java or..
Convert a number range to another range, maintaining ratio http://stackoverflow.com/questions/929103/convert-a-number-range-to-another-range-maintaining-ratio where the min max or either range can be adjusted ie the second range could be 50 to 800 instead of 0 to 100 . python..
Programmatically detect system-proxy settings on Windows XP with Python http://stackoverflow.com/questions/1068212/programmatically-detect-system-proxy-settings-on-windows-xp-with-python I've verified that everybody can download our stuff from IE without problems regardless of where they are int the world... world. So all I need to do is detect what proxy settings IE is using and make Setuptools use those settings. Theoretically.. it that is guaranteed not to change with people upgrade IE For example is there a Windows API call I can use to discover..
Python library for rendering HTML and javascript http://stackoverflow.com/questions/126131/python-library-for-rendering-html-and-javascript ukasz some kind of webkit embedded craziness some kind of IE win32 scripting craziness or finally a pyxpcom based solution..
http://stackoverflow.com/questions/1330498/what-is-cross-browser-support-for-javascript-1-7s-new-features-specifically-ar brevity is a great thing. Basically it all comes down to IE in the end though. Does IE support these new features What about.. Basically it all comes down to IE in the end though. Does IE support these new features What about other browsers javascript..
How to encode UTF8 filename for HTTP headers? (Python, Django) http://stackoverflow.com/questions/1361604/how-to-encode-utf8-filename-for-http-headers-python-django to do this. Some browsers implement proprietary extensions IE Chrome other implement RFC 2231 Firefox Opera . See test cases.. the encoding defined in RFC 6266 and RFC 5987 Safari 6 IE 9 Chrome Firefox Opera Konqueror . share improve this answer..
A clean, lightweight alternative to Python's twisted? http://stackoverflow.com/questions/1824418/a-clean-lightweight-alternative-to-pythons-twisted and the associated woes it creates for multithreaded code IE most of the time stuff just ends up serialized ... I'd like..
Python script for minifying CSS? http://stackoverflow.com/questions/222581/python-script-for-minifying-css a lot of hacks P css re.sub r' s s ' HACK1 css # preserve IE 6 comment hack css re.sub r' s S ' css css css.replace HACK1.. re.sub r' s S ' css css css.replace HACK1 ' ' # preserve IE 6 comment hack # url doesn't need quotes css re.sub r'url '..
http://stackoverflow.com/questions/2262100/rgb-int-to-rgb-python n r256^2 g256 b how can I solve the reverse in Python IE given an n I need the r g b values. python integer rgb share..
BeautifulSoup: Get the contents of a specific table http://stackoverflow.com/questions/2935658/beautifulsoup-get-the-contents-of-a-specific-table table My local airport disgracefully blocks users without IE and looks awful. I want to write a Python scripts that would.. are mechanize for cheating the site to believe I use IE and BeautifulSoup for parsing page to get the flights data table...
Django Admin Media prefix URL issue http://stackoverflow.com/questions/5152026/django-admin-media-prefix-url-issue css base.css endblock block extrastyle endblock if lte IE 7 link rel stylesheet type text css href block stylesheet_ie..
http://stackoverflow.com/questions/5793414/mechanize-and-javascript processes like WATIR or libraries that manipulate FF and IE while supporting Javascript fully as if actually browing the..
python's webbrowser launches IE instead of default on windows 7 http://stackoverflow.com/questions/5916270/pythons-webbrowser-launches-ie-instead-of-default-on-windows-7 webbrowser launches IE instead of default on windows 7 I'm attempting to launch a.. file chrome launches. When I use python's webbrowser.open IE launches instead with a blank address bar. Python 2.7.1 r271..
Correct way to write line to file in Python http://stackoverflow.com/questions/6159900/correct-way-to-write-line-to-file-in-python those answers with n ...is this universal or Unix specific IE should I be doing r n on Windows python file io share improve..
Windows Authentication with Python and urllib2 http://stackoverflow.com/questions/909658/windows-authentication-with-python-and-urllib2 just grab the authentication information somehow e.g. like IE does or Firefox if I changed the network.automatic ntlm auth.trusted..
What are the correct usage/parameter values for HoughCircles in OpenCV for Iris detection? http://stackoverflow.com/questions/10716464/what-are-the-correct-usage-parameter-values-for-houghcircles-in-opencv-for-iris the best approach is to use a parameter search on param2 . Ie. keep on trying values until your criteria is met such as there..
Python raw_input() replacement that uses a configurable text editor http://stackoverflow.com/questions/13168083/python-raw-input-replacement-that-uses-a-configurable-text-editor process with the editor command but does not return. Ie your python script exits when vim starts. popen does not start..
See socket options on existing sockets created by other apps? http://stackoverflow.com/questions/1618051/see-socket-options-on-existing-sockets-created-by-other-apps socket options have been set on an existing socket. Ie pretty much everything you can see in # usr bin env python '''See..
Getting method parameter names in python http://stackoverflow.com/questions/218616/getting-method-parameter-names-in-python How can I extract the number and names of the arguments. Ie. given that I have a reference to func I want the func. something.. order that they appear for the actual function as a key. Ie. how would the decorator look that printed a b when I call aMethod..
Python: defining functions on the fly http://stackoverflow.com/questions/2222466/python-defining-functions-on-the-fly f in funcs f The problem is that func is being overriden. Ie the output of the code is 9 9 9 ... How would you solve this.. solution would be to change the name of the function. Ie for i in range 10 def func i ... or some other weird syntax..
how to tell if a string is base64 or not http://stackoverflow.com/questions/271657/how-to-tell-if-a-string-is-base64-or-not is base64 or not using the jython programming language Ie. First attachment _NextPart_000_0091_01C940CC.EF5AC860 Content..
How do I sum the columns in 2D list? http://stackoverflow.com/questions/3223043/how-do-i-sum-the-columns-in-2d-list Can I get the column totals without a double for loop Ie to get this list 3 6 8 10 python share improve this question..
Django admin - How can I add the green plus sign for Many-to-many Field in custom admin form http://stackoverflow.com/questions/3692822/django-admin-how-can-i-add-the-green-plus-sign-for-many-to-many-field-in-custo my MultiSelect field photos when I define it in my form. Ie removing the line with the definition photos ... makes the plus..
System PIP instead of virtualenv PIP by default? http://stackoverflow.com/questions/9235212/system-pip-instead-of-virtualenv-pip-by-default
api = twitter.Api() AttributeError: 'module' object has no attribute 'Api http://stackoverflow.com/questions/9291122/api-twitter-api-attributeerror-module-object-has-no-attribute-api one twitter package and look at another documentation. Ie python 1.7.2 is the project from https github.com sixohsix twitter..
Python Class Based Decorator with parameters that can decorate a method or a function http://stackoverflow.com/questions/9416947/python-class-based-decorator-with-parameters-that-can-decorate-a-method-or-a-fun and that takes at least one additional parameter . Ie so that the following would work class MyDecorator object def..
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