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python Programming Glossary: initialCommon pitfalls in Python [duplicate] http://stackoverflow.com/questions/1011431/common-pitfalls-in-python classes are new style so you don't need to do that. Don't initialize class attributes outside the __init__ method People coming.. two big hazards If the class attribute is changed then the initial value is changed. If you set a mutable object as a default value..
how to extract domain name from URL http://stackoverflow.com/questions/1066933/how-to-extract-domain-name-from-url the domain name from a URL excluding any subdomains My initial simplistic attempt was '.'.join urlparse.urlparse url .netloc.split..
http://stackoverflow.com/questions/190010/daemon-threads-explanation program exits when only daemon threads are left. The initial value is inherited from the creating thread. Does anyone have..
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 2073279#2073279 numbers range 3 max_n 1 2 half max_n 2 initial 4 for step in xrange 3 max_n 1 2 for i in xrange initial half.. 2 initial 4 for step in xrange 3 max_n 1 2 for i in xrange initial half step numbers i 1 0 initial 2 step 1 if initial half return.. max_n 1 2 for i in xrange initial half step numbers i 1 0 initial 2 step 1 if initial half return 2 filter None numbers ################################################################################..
How does zip(*[iter(s)]*n) work in Python? http://stackoverflow.com/questions/2233204/how-does-zipitersn-work-in-python # 7 8 9 FWIW you can get the same result with map with an initial argument of None map None iter s 3 1 2 3 4 5 6 7 8 9 For more..
Show default value for editing on Python input possible? http://stackoverflow.com/questions/2533120/show-default-value-for-editing-on-python-input-possible of the user typing Download it is already there as a initial value. If the user wants to edit it as Downloads all he has..
Is it Pythonic to use bools as ints? http://stackoverflow.com/questions/3174392/is-it-pythonic-to-use-bools-as-ints the place some used all caps some all lowercase some cap initial and so introduced the bool subclass of int and its True and..
How are Python's Built In Dictionaries Implemented http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented 1 ... . ... i ... . ... n ... When a new dict is initialized it starts with 8 slots . see dictobject.h 49 When adding.. slot i that is based on the hash of the key. CPython uses initial i hash key mask . Where mask PyDictMINSIZE 1 but that's not.. 1 but that's not really important . Just note that the initial slot i that is checked depends on the hash of the key. If that..
How can I improve my paw detection? http://stackoverflow.com/questions/4087919/how-can-i-improve-my-paw-detection find_paws data smooth_radius 4 # Sort by time of initial paw impact... This way we can determine which # paws are which..
Python import MySQLdb error - Mac 10.6 http://stackoverflow.com/questions/4730787/python-import-mysqldb-error-mac-10-6 MySQLdb extension is asking for a relative path name no initial while the MySQL library advertises itself with an absolute path..
Using strides for an efficient moving average filter http://stackoverflow.com/questions/4936620/using-strides-for-an-efficient-moving-average-filter you inadvertently make a copy of your array. While the initial rolling array is just a view into the memory of your original..
Regular expression to detect semi-colon terminated C++ for & while loops http://stackoverflow.com/questions/524548/regular-expression-to-detect-semi-colon-terminated-c-for-while-loops with a for or while statement ^ s for while s # match the initial opening parenthesis # Now make a named group 'balanced' which.. with a for or while statement ^ s for while s # match the initial opening parenthesis # Now make a named group 'balanced' which..
How can you make a vote-up-down button like in Stackoverflow? http://stackoverflow.com/questions/719194/how-can-you-make-a-vote-up-down-button-like-in-stackoverflow I got carried away a little bit. You're still missing an initial request to get all the votes when the page is first loaded and..
Python | accessing dll using ctypes http://stackoverflow.com/questions/7586504/python-accessing-dll-using-ctypes used ctypes in Python. The problem is that it fails at the initial point which is when loading the dll in to the memory. This is..
Using multiprocessing.Manager.list instead of a real list makes the calculation take ages http://stackoverflow.com/questions/13121790/using-multiprocessing-manager-list-instead-of-a-real-list-makes-the-calculation procs proc.start for proc in procs proc.join logger.warn 'Initial free m '.format m free_memory N 15000 data np.ones N N logger.warn.. __name__ '__main__' main which yielded WARNING MainProcess Initial free 2522340 WARNING MainProcess After allocating data 763248..
Python Multiprocessing storing data until further call in each process http://stackoverflow.com/questions/14437944/python-multiprocessing-storing-data-until-further-call-in-each-process return large_object if __name__ '__main__' report_memory 'Initial' tfidf_vect model train_and_model report_memory 'After train_and_model'.. report_memory 'After p.join' Output 1 19 01 39 MainProcess Initial 26585728 19 01 51 MainProcess After train_and_model 25958924.. now if I change the main method to this report_memory 'Initial' large_object load_large_object report_memory 'After loading..
Getting standard errors on fitted parameters using the optimize.leastsq method in python http://stackoverflow.com/questions/14581358/getting-standard-errors-on-fitted-parameters-using-the-optimize-leastsq-method-i p t y # Distance to the target function p0 1 1 1 1 # Initial guess for the parameters out optimize.leastsq errfunc p0 args..
What is the difference between Ruby and Python versions of“self”? http://stackoverflow.com/questions/159990/what-is-the-difference-between-ruby-and-python-versions-ofself explicitly defined as part of self using dot notation. Initial Googling reveals http rubylearning.com satishtalim ruby_self.html..
Can I use JSON data to add new objects in Django? http://stackoverflow.com/questions/18724863/can-i-use-json-data-to-add-new-objects-in-django application. The format looks like this Record 12345 Event Initial task completed TeamID 12345 IndiviualID null Description Just.. are simply discarded. json Record 12345 Name Joe Event Initial task completed TeamID 12345 IndiviualID Description Just a description.. d k.lower v d.save Results in Member 1 Joe 2 Jane Data 1 1 Initial task completed Just a description 2 2 A different task completed..
Pythonic way to create a numpy array from a list of numpy arrays http://stackoverflow.com/questions/2106287/pythonic-way-to-create-a-numpy-array-from-a-list-of-numpy-arrays loop This shows numpy_all_the_way uses less memory test.py Initial memory usage 19788 After python_lists_to_array 20976 After numpy_all_the_way.. M arr.resize k M return arr if __name__ '__main__' print 'Initial memory usage s' memory_usage arr python_lists_to_array 5000..
How to read a CSV line with "? http://stackoverflow.com/questions/2139750/how-to-read-a-csv-line-with machine for this task would probably only need two states Initial one where it reads every character except comma and newline..
Create directory if it doesn't exist for file write http://stackoverflow.com/questions/273192/create-directory-if-it-doesnt-exist-for-file-write magic flag to open that does this automatically is there Initial attempt filename my directory filename.txt dir os.path.dirname..
Why is my file getting closed if I don't do anything with it for a while? http://stackoverflow.com/questions/6991878/why-is-my-file-getting-closed-if-i-dont-do-anything-with-it-for-a-while I O operation on closed file when I try to readline it. Initial Solution In trying to figure out when exactly the file was being.. file swing jvm jython share improve this question Initial Partial Answer Added to Question I think I just figured this..
correct way to define class variables in Python [duplicate] http://stackoverflow.com/questions/9056957/correct-way-to-define-class-variables-in-python __init__ self self.object_elem 456 c1 MyClass c2 MyClass # Initial values of both elements print c1.static_elem c1.object_elem..
matplotlib animating a scatter plot http://stackoverflow.com/questions/9401658/matplotlib-animating-a-scatter-plot init_func self.setup_plot blit True def setup_plot self Initial drawing of the scatter plot. x y s c next self.stream self.scat..
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