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python Programming Glossary: backWhat can you use Python generator functions for? http://stackoverflow.com/questions/102535/what-can-you-use-python-generator-functions-for for generators that is really the same is to replace callbacks with iteration. In some situations you want a function to do.. a function to do a lot of work and occasionally report back to the caller. Traditionally you'd use a callback function for.. report back to the caller. Traditionally you'd use a callback function for this. You pass this callback to the work function..
Get last n lines of a file with Python, similar to tail http://stackoverflow.com/questions/136168/get-last-n-lines-of-a-file-with-python-similar-to-tail apparently file is smaller than what we want # to step back go to the beginning instead f.seek 0 pos f.tell lines f.read.. 1 data while size 0 and bytes 0 if bytes BUFSIZ 0 # Seek back one whole BUFSIZ f.seek block BUFSIZ 2 # read BUFFER data.append..
When is “i += x” different from “i = i + x” in Python? http://stackoverflow.com/questions/15376509/when-is-i-x-different-from-i-i-x-in-python object i . calls the __iadd__ method if it exists falling back on __add__ if it doesn't exist whereas calls the __add__ method..
Fastest way to list all primes below N in python http://stackoverflow.com/questions/2068372/fastest-way-to-list-all-primes-below-n-in-python 0 tmp const del_mult tmptk off start prime # now we go back to top tk1 so we need to increase pos by 1 pos 1 cpos const..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained brand_new_atm hsbc.create_atm # build a new one to get back in business for cash in brand_new_atm ... print cash 100 100..
How to clone a list in python? http://stackoverflow.com/questions/2612802/how-to-clone-a-list-in-python it new_list old_list Alex Martelli's opinion at least back in 2007 about this is that it is a weird syntax and it does..
Python “is” operator behaves unexpectedly with integers http://stackoverflow.com/questions/306313/python-is-operator-behaves-unexpectedly-with-integers when you create an int in that range you actually just get back a reference to the existing object. So it should be possible..
How can I represent an 'Enum' in Python? http://stackoverflow.com/questions/36932/how-can-i-represent-an-enum-in-python 0 Numbers.ONE 1 Support for converting the values back to names can be added this way def enum sequential named enums..
Search and replace a line in a file in Python http://stackoverflow.com/questions/39086/search-and-replace-a-line-in-a-file-in-python do a search and replace on some lines and write the result back to the file. I could first load the whole file in memory and.. first load the whole file in memory and then write it back but that probably is not the best way to do it. What is the.. line.replace 'foo' 'bar' # how to write this newline back to the file python file share improve this question I guess..
Converting string into datetime http://stackoverflow.com/questions/466345/converting-string-into-datetime 1 33PM Aug 28 1999 12 00AM I'm going to be shoving these back into proper datetime fields in a database so I need to magic..
Generator Expressions vs. List Comprehension http://stackoverflow.com/questions/47789/generator-expressions-vs-list-comprehension is running too slowly then and only then should you go back and worry about tuning your code. share improve this answer..
What are some good Python ORM solutions? [closed] http://stackoverflow.com/questions/53428/what-are-some-good-python-orm-solutions side browser that talks to a Python web service on the back end. So I really need something fast and lightweight on the.. So I really need something fast and lightweight on the back end that I can implement using Python that then speaks to the..
Convert XML/HTML Entities into Unicode String in Python http://stackoverflow.com/questions/57708/convert-xml-html-entities-into-unicode-string-in-python HTML entities and returns a unicode type For example I get back #x01ce which represents an with a tone mark. In binary this..
Recommendations of Python REST (web services) framework? [closed] http://stackoverflow.com/questions/713847/recommendations-of-python-rest-web-services-framework
Making a flat list out of list of lists in Python [duplicate] http://stackoverflow.com/questions/952914/making-a-flat-list-out-of-list-of-lists-in-python 6 7 8 9 reduce lambda x y x.extend y l Error message Traceback most recent call last File line 1 in File line 1 in AttributeError.. L sublists of I items each the first I items are copied back and forth L 1 times the second I items L 2 times and so on total..
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference passed in but does let you get the information you want back out def return_a_whole_new_string the_string new_string something_to_do_with_the_old_string..
Replace URL with a link using regex in python http://stackoverflow.com/questions/1112012/replace-url-with-a-link-using-regex-in-python regex in python how do I convert some text to a link Back in PHP I used this piece of code that worked well for my purpose..
http://stackoverflow.com/questions/11906925/python-simulate-keydown 0xA5 # Right MENU key VK_BROWSER_BACK 0xA6 # Browser Back key VK_BROWSER_FORWARD 0xA7 # Browser Forward key VK_BROWSER_REFRESH..
Python: removing characters except digits from string http://stackoverflow.com/questions/1450897/python-removing-characters-except-digits-from-string this simple not quite this fast though still quite usable. Back to 2. the performance difference is impressive... python mtimeit..
How to design an application in a modular way? http://stackoverflow.com/questions/1865727/how-to-design-an-application-in-a-modular-way major architectural layers are Problem Domain aka. Engine Back end the domain classes which do all the actual work have domain..
http://stackoverflow.com/questions/2119067/in-wxpython-what-is-the-standard-process-of-making-an-application-slightly-more quite seem to cover it. I have to change the names on the Back and Next buttons disable them at times and so forth. What is..
Learning Python coming from PHP http://stackoverflow.com/questions/2561362/learning-python-coming-from-php Python releases yet. I'm sure he's working on it tho. Back on hijacked topic there are several options when it comes to..
algorithm for python itertools.permutations http://stackoverflow.com/questions/2565619/algorithm-for-python-itertools-permutations one swap in the indices and we break the inner loop again. Back to the loop yet again the last one is decremented this time..
How should I correctly handle exceptions in Python3 http://stackoverflow.com/questions/2913819/how-should-i-correctly-handle-exceptions-in-python3 thus overloaded is more often than not quite dubious. Back to user and environmental errors users will inevitably make..
What is the python “with” statement designed for? [closed] http://stackoverflow.com/questions/3012488/what-is-the-python-with-statement-designed-for 1 print Test entry 2 # back to the normal stdout print Back to normal stdout again And finally another example that creates..
Character Sets explained for Dummies! [closed] http://stackoverflow.com/questions/3049090/character-sets-explained-for-dummies font. It may be made up of more than one code point. Back in olden times a character set and a character encoding were..
Bash scripting “common gotchas” for Python/Perl/Ruby programmers http://stackoverflow.com/questions/3144059/bash-scripting-common-gotchas-for-python-perl-ruby-programmers common gotchas&rdquo for Python Perl Ruby programmers Background I grew up on using Perl Python Ruby for sysadmin type.. ish like functions looping or control structures. Back then I could pick my favorite tool for whatever the job. Problem..
How do I force Django to ignore any caches and reload data? http://stackoverflow.com/questions/3346124/how-do-i-force-django-to-ignore-any-caches-and-reload-data NEW a.save MyModel.objects.get id 1 .my_field u'NEW' Back to terminal 1 to demonstrate the problem we still read the old..
Using Django settings in templates http://stackoverflow.com/questions/3430451/using-django-settings-in-templates 'site_name' settings.SITE_NAME return my_dict Back in your settings.py activate it by doing TEMPLATE_CONTEXT_PROCESSORS..
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 is the proper way to install pip virtualenv and distribute Background In my answer to SO question 4314376 I recommended using.. potentially break other things on your operating system. Back to the short question So Glyph's response leads me to my original..
Signal handlers and logging in Python http://stackoverflow.com/questions/4601674/signal-handlers-and-logging-in-python signals in Python are postponed until the GIL is free . Back to your question. No as long you use re entrant functions within..
permutations with unique values http://stackoverflow.com/questions/6284396/permutations-with-unique-values d 1 yield g so each result is propagated up to caller. Back to original program We have list of unique elements. Before..
How to re import an updated package while in Python Interpreter? http://stackoverflow.com/questions/684171/how-to-re-import-an-updated-package-while-in-python-interpreter REPL shell2 echo 'def x print version 2 ' mymodule.py # Back in that same python session reload mymodule module 'mymodule'..
Python multiprocessing.Pool: when to use apply, apply_async or map? http://stackoverflow.com/questions/8533318/python-multiprocessing-pool-when-to-use-apply-apply-async-or-map multiprocessing share improve this question Back in the old days of Python to call a function with arbitrary..
How to call a web-service using JavaEE? http://stackoverflow.com/questions/9663420/how-to-call-a-web-service-using-javaee wsdl After a refresh you should see serveral created files Back in your IDE Now you're able to use your generated stub files..
http://stackoverflow.com/questions/9860667/writing-robust-color-and-size-invariant-circle-detection-with-opencv-based-on asking what are efficient methods to attack the problem. Back to the main question what is the best method for this problem..
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