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python Programming Glossary: moreWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python __main__.ObjectCreator object at 0x8974f2c But classes are more than that in Python. Classes are objects too. Yes objects. As.. bases uppercase_attr That's it. There is really nothing more about metaclasses. The reason behind the complexity of the code.. callable why would you use a class since it's obviously more complicated There are several reasons to do so The intention..
Python List Comprehension Vs. Map http://stackoverflow.com/questions/1247486/python-list-comprehension-vs-map map over list comprehension or vice versa Is one generally more effecient or generally considered more pythonic than the other.. Is one generally more effecient or generally considered more pythonic than the other python map list comprehension share.. in other cases and most not all pythonistas consider them more direct and clearer. An example of the tiny speed advantage of..
Difference between __str__ and __repr__ in Python http://stackoverflow.com/questions/1436703/difference-between-str-and-repr-in-python use any debugger and have never used one seriously. Furthermore I believe that the big fault in debuggers is their basic nature.. useful to have a string version which errs on the side of more readability in favor of more ambiguity. share improve this..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained will run the loop you have written in the function one more time and return the next value until there is no value to return... empty once the function runs but does not hit yield anymore. It can be because the loop had come to an end or because you.. come to an end or because you do not satisfy a if else anymore. Your code explained Generator # Here you create the method..
http://stackoverflow.com/questions/2709821/python-self-explained declarations like C and Java do or perhaps something yet more different but it didn't. Python's all for making things explicit..
How to improve performance of this code? http://stackoverflow.com/questions/4295799/how-to-improve-performance-of-this-code This keeps hashes of its items so the in operator is much more efficient than for lists. However lists aren't hashable items..
What is the most “pythonic” way to iterate over a list in chunks? http://stackoverflow.com/questions/434287/what-is-the-most-pythonic-way-to-iterate-over-a-list-in-chunks a lot like C think though which makes me suspect there's a more pythonic way of dealing with this situation. The list is discarded..
How do you remove duplicates from a list in Python whilst preserving order? http://stackoverflow.com/questions/480214/how-do-you-remove-duplicates-from-a-list-in-python-whilst-preserving-order sample . But I'd like to avail myself of a built in or a more Pythonic idiom if possible. Related question In Python what..
Old style and new style classes in Python http://stackoverflow.com/questions/54867/old-style-and-new-style-classes-in-python 2.2 to unify classes and types . A new style class neither more nor less than a user defined type. If x is an instance of a..
How can you profile a Python script? http://stackoverflow.com/questions/582336/how-can-you-profile-a-python-script like this import cProfile cProfile.run 'foo ' Even more usefully you can invoke the cProfile when running a script python..
Syntax error on print with Python 3 http://stackoverflow.com/questions/826948/syntax-error-on-print-with-python-3 Intel on win32 Type help copyright credits or license for more information. print hello World File stdin line 1 print hello..
Calling an external command in Python http://stackoverflow.com/questions/89228/calling-an-external-command-in-python ls l The advantage of subprocess vs system is that it is more flexible you can get the stdout stderr the real status code..
How do I capture SIGINT in Python? http://stackoverflow.com/questions/1112343/how-do-i-capture-sigint-in-python print 'Press Ctrl C' signal.pause Code adapted from here . More documentation on signal can be found here . share improve..
http://stackoverflow.com/questions/1319763/key-ordered-dict-in-python array in terms of keys not of insertion order . More precisely I am looking for a space efficent implementation of..
Finding the index of an item given a list containing it in Python http://stackoverflow.com/questions/176918/finding-the-index-of-an-item-given-a-list-containing-it-in-python
Lost connection to MySQL server during query http://stackoverflow.com/questions/1884859/lost-connection-to-mysql-server-during-query to increase the maximum packet size on the client end. More information on setting the packet size is given in Section B.5.2.10..
How can I quantify difference between two images? http://stackoverflow.com/questions/189943/how-can-i-quantify-difference-between-two-images current pixel values to the range of μ 2 μ 2 or μ μ More advanced versions make take into account time series for every..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained Iterators are objects that let you iterate on iterables. More about it in this article about how does the for loop work ...
Why does Python print unicode characters when the default encoding is ASCII? http://stackoverflow.com/questions/2596714/why-does-python-print-unicode-characters-when-the-default-encoding-is-ascii the terminal's encoding is independant from the shell's. More details on unicode UTF 8 and latin 1 Unicode is basically a..
How do I perform HTML decoding/encoding using Python/Django? http://stackoverflow.com/questions/275174/how-do-i-perform-html-decoding-encoding-using-python-django for strings encoded with django.utils.html.escape . More generally it is a good idea to stick with the standard library..
What is the python “with” statement designed for? [closed] http://stackoverflow.com/questions/3012488/what-is-the-python-with-statement-designed-for and cleanup tasks in so called context managers . More details can be found in PEP 343 . For instance the open statement..
http://stackoverflow.com/questions/3684484/peak-detection-in-a-2d-array the front paws but it works less well for the hind legs. More specifically it can't recognize the small peak that's the fourth..
Combining two sorted lists in Python http://stackoverflow.com/questions/464342/combining-two-sorted-lists-in-python quicker than implementing the sorting merging in a loop. More importantly the above is much less code and very readable. If..
How to install pip on windows? http://stackoverflow.com/questions/4750806/how-to-install-pip-on-windows about community do eg. Ruby with Gem Nodejs with Npm . More of this bitter rant at http stackoverflow.com a 13445719 284795..
Unicode (utf8) reading and writing to files in python http://stackoverflow.com/questions/491921/unicode-utf8-reading-and-writing-to-files-in-python that instead since that has an asciiable representation More to the point is there an ascii representation of this unicode..
Dynamically adding a form to a Django formset with Ajax http://stackoverflow.com/questions/501719/dynamically-adding-a-form-to-a-django-formset-with-ajax form.as_table table div endfor input type button value Add More id add_more script '#add_more' .click function cloneMore 'div.table.. More id add_more script '#add_more' .click function cloneMore 'div.table last' 'service' script In a javascript file function.. last' 'service' script In a javascript file function cloneMore selector type var newElement selector .clone true var total..
Differences between distribute, distutils, setuptools and distutils2? http://stackoverflow.com/questions/6344076/differences-between-distribute-distutils-setuptools-and-distutils2 not make the Python 3.3 release and it was put on hold. More info The fate of Distutils Pycon Summit Packaging Sprint detailed..
'import module' or 'from module import' http://stackoverflow.com/questions/710551/import-module-or-from-module-import mo.foo from module import foo Pros Less typing to use foo More control over which items of a module can be accessed Cons To..
Adding a Method to an Existing Object http://stackoverflow.com/questions/972/adding-a-method-to-an-existing-object AttributeError A instance has no attribute 'barFighters' More information can be found by reading about descriptors and metaclass..
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