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python Programming Glossary: abcWeighted random sample in python http://stackoverflow.com/questions/13047806/weighted-random-sample-in-python total Counter for _ in range 1000 sample weighted_sample abc 1 10 2 5 total.update sample print sample print Frequences s..
http://stackoverflow.com/questions/1335392/iteration-over-list-slices self.chunk self.chunk Example chunker Chunker 3 for s in abcd efgh for chunk in chunker s print ''.join chunk if chunker.chunk..
Python normal arguments vs. keyword arguments http://stackoverflow.com/questions/1419046/python-normal-arguments-vs-keyword-arguments
How can I remove (chomp) a newline in Python? http://stackoverflow.com/questions/275018/how-can-i-remove-chomp-a-newline-in-python string ' There is also the lstrip and strip methods. s n abc def s.strip 'abc def' s.rstrip ' n abc def' s.lstrip 'abc def.. is also the lstrip and strip methods. s n abc def s.strip 'abc def' s.rstrip ' n abc def' s.lstrip 'abc def ' share improve..
How do you get the logical xor of two variables in Python? http://stackoverflow.com/questions/432842/how-do-you-get-the-logical-xor-of-two-variables-in-python be bitwise and not defined on all objects 1 ^ 1 0 2 ^ 1 3 abc ^ Traceback most recent call last File stdin line 1 in module..
Passing command Line argument to Python script within Eclipse(Pydev) http://stackoverflow.com/questions/4355721/passing-command-line-argument-to-python-script-within-eclipsepydev argecho.py or you@localhost py python argecho.py abc def argecho.py abc def How would I pass same arguments to Python.. or you@localhost py python argecho.py abc def argecho.py abc def How would I pass same arguments to Python script within..
http://stackoverflow.com/questions/454648/pythonic-macro-syntax more features to the macro constructs. For example Several abc min 3 max 5 name a . I think this could also be used to add..
Check if a Python list item contains a string inside another string http://stackoverflow.com/questions/4843158/check-if-a-python-list-item-contains-a-string-inside-another-string a string inside another string I have a list my_list 'abc 123' 'def 456' 'ghi 789' 'abc 456' and want to search for items.. I have a list my_list 'abc 123' 'def 456' 'ghi 789' 'abc 456' and want to search for items that contain the string 'abc'.. 456' and want to search for items that contain the string 'abc' . How can I do that if 'abc' in my_list would check if 'abc'..
Python subprocess get children's output to file and terminal? http://stackoverflow.com/questions/4984428/python-subprocess-get-childrens-output-to-file-and-terminal __file__ stdout None stderr errf assert not teed_call echo abc stdout outf stderr errf bufsize 0 assert teed_call gcc a b close_fds..
How can I concatenate a string and a number in Python? http://stackoverflow.com/questions/6981495/how-can-i-concatenate-a-string-and-a-number-in-python a number in Python. It gave me an error when I tried this abc 9 The error is Traceback most recent call last File pyshell#5.. most recent call last File pyshell#5 line 1 in module abc 9 TypeError cannot concatenate 'str' and 'int' objects Why I..
Dynamically set local variable in Python http://stackoverflow.com/questions/8028708/dynamically-set-local-variable-in-python way to access the function locals through it def foo ... abc 123 ... lcl zzz ... lcl 'abc' 456 ... deF 789 ... print abc.. locals through it def foo ... abc 123 ... lcl zzz ... lcl 'abc' 456 ... deF 789 ... print abc ... print zzz ... print lcl ..... 123 ... lcl zzz ... lcl 'abc' 456 ... deF 789 ... print abc ... print zzz ... print lcl ... zzz locals foo 123 '__doc__'..
http://stackoverflow.com/questions/9922436/checking-if-a-strings-characters-are-ascending-alphabetically-and-its-ascent-is alphabetically and if that ascent is evenly spaced. a abc b ceg So a is alphabetically ascending and it's spacing is 1.. itertools import product from string import lowercase a abc any a in lowercase i j 1 for i j in product range 26 repeat..
Writing Python bindings for C++ code that use OpenCV http://stackoverflow.com/questions/12957492/writing-python-bindings-for-c-code-that-use-opencv function that is giving the segmentation fault. PyObject ABC doSomething PyObject image Mat m pyopencv_to image m This line.. wrapped library. import cv2 def main myobj pysomemodule.ABC faces.train # Create python object. This works. image cv2.imread.. That's it. The code below shows how to wrap a C class ABC and expose its method doSomething that takes in a numpy array..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python x You could say that basestring is an Abstract Base Class ABC it offers no concrete functionality to subclasses but rather.. with Python 2.6 and 3.0. The PEP makes it clear that while ABCs can often substitute for duck typing there is generally no.. there is generally no big pressure to do that see here . ABCs as implemented in recent Python versions do however offer extra..
Rules of thumb for when to use operator overloading in python http://stackoverflow.com/questions/1552260/rules-of-thumb-for-when-to-use-operator-overloading-in-python new class that falls into an existing Abstract Base Class ABC indeed many of the ABCs in standard library module collections.. an existing Abstract Base Class ABC indeed many of the ABCs in standard library module collections rely on the presence.. must override __getitem__ and so forth. Moreover the ABCs can provide your class with mixin functionality e.g. both Sequence..
Alternative way to split a list into groups of n http://stackoverflow.com/questions/1624883/alternative-way-to-split-a-list-into-groups-of-n def grouper n iterable fillvalue None grouper 3 'ABCDEFG' 'x' ABC DEF Gxx args iter iterable n return itertools.zip_longest.. grouper n iterable fillvalue None grouper 3 'ABCDEFG' 'x' ABC DEF Gxx args iter iterable n return itertools.zip_longest args..
What does `<>` mean in Python? http://stackoverflow.com/questions/16749121/what-does-mean-in-python this question It means not equal to. It was taken from ABC python's predecessor see here x y x y x y x y x y x y 0 d 10.. y x y x y 0 d 10 Order tests means 'not equals' I believe ABC took it from Pascal a language Guido began programming with...
Flatten (an irregular) list of lists in Python http://stackoverflow.com/questions/2158395/flatten-an-irregular-list-of-lists-in-python
Python: How to “perfectly” override a dict http://stackoverflow.com/questions/3387691/python-how-to-perfectly-override-a-dict write an object that behaves like a dict quite easily with ABC s Abstract Base Classes from the collections module. It even.. a method so below is the minimal version that shuts the ABC up. import collections class TransformedDict collections.MutableMapping.. self key return key You get a few free methods from the ABC class MyTransformedDict TransformedDict def __keytransform__..
What is the best (idiomatic) way to check the type of a Python variable? [duplicate] http://stackoverflow.com/questions/378927/what-is-the-best-idiomatic-way-to-check-the-type-of-a-python-variable want to use collections.Mapping instead of dict as per the ABC PEP . def value_list x if isinstance x dict return list set..
String formatting options: pros and cons http://stackoverflow.com/questions/8395925/string-formatting-options-pros-and-cons callback like in the following example data 1 2 'a' 'b' 5 'ABC' formatter 'First is 0 0 then comes 0 1 '.format for item in.. then comes 2 First is a then comes b First is 5 then comes ABC Isn't it a lot more flexible than string formatting operation..
How to spawn parallel child processes on a multi-processor system? http://stackoverflow.com/questions/884650/how-to-spawn-parallel-child-processes-on-a-multi-processor-system name NAME where NAME is something like XYZ ABC NYU etc. In my parent controller script I retrieve the name.. I retrieve the name variable from a list my_list 'XYZ' 'ABC' 'NYU' So my question is what is the best way to spawn off these.. Queue from multiprocessing import Process my_list 'XYZ' 'ABC' 'NYU' if __name__ '__main__' processors multiprocessing.cpu_count..
Iterate an iterator by chunks (of n) in Python? http://stackoverflow.com/questions/8991506/iterate-an-iterator-by-chunks-of-n-in-python you want def grouper n iterable fillvalue None grouper 3 'ABCDEFG' 'x' ABC DEF Gxx args iter iterable n return izip_longest.. grouper n iterable fillvalue None grouper 3 'ABCDEFG' 'x' ABC DEF Gxx args iter iterable n return izip_longest fillvalue fillvalue..
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