python Programming Glossary: mul

http://stackoverflow.com/questions/1665511/python-equivalent-to-atoi-atof

if s.startswith value 1 s s 1 elif s.startswith s s 1 try mul int .join itertools.takewhile str.isdigit s except TypeError.. str.isdigit s except TypeError ValueError AttributeError mul 0 return mul value python share improve this question It's.. s except TypeError ValueError AttributeError mul 0 return mul value python share improve this question It's pretty straightforward..

“None” keeps showing up when I run my program

http://stackoverflow.com/questions/16764247/none-keeps-showing-up-when-i-run-my-program

a input 'subract this' b input 'from this' print b a def mul print 'choose 2 numbers to multiply' a input multiply this b.. 'from this' print b a def mul print 'choose 2 numbers to multiply' a input multiply this b input by this print b a def div.. b a def mul print 'choose 2 numbers to multiply' a input multiply this b input by this print b a def div print 'choose what..

Optimized dot product in Python

http://stackoverflow.com/questions/1828233/optimized-dot-product-in-python

approaches so far the fastest seems to be sum starmap mul izip v1 v2 where starmap and izip come from the itertools module.. itertools import imap starmap izip from operator import mul def v N 50 min 10 max 10 Generates a random vector in an array.. same pass def d0 v1 v2 d0 is Nominal approach multiply add in a loop check v1 v2 out 0 for k in range len..

Returning the product of a list

http://stackoverflow.com/questions/2104782/returning-the-product-of-a-list

find that this is marginally faster than using operator.mul from operator import mul # from functools import reduce # python3.. faster than using operator.mul from operator import mul # from functools import reduce # python3 compatibility def with_lambda.. reduce lambda x y x y list def without_lambda list reduce mul list def forloop list r 1 for x in list r x return r import..

Can this Python postfix notation (reverse polish notation) interpreter be made more efficient and accurate?

http://stackoverflow.com/questions/3865939/can-this-python-postfix-notation-reverse-polish-notation-interpreter-be-made-m

meaning that it is a data structure that contains multiple elements. def __init__ self Initialize a new empty stack... operators to their functions ARITHMETIC_OPERATORS add sub mul div mod pow floordiv def postfix expression stack Stack operators.. run of any given code just run python m cProfile s cumulative foo.py Specific points list makes a good stack out of the..

Is there a built-in product() in Python?

http://stackoverflow.com/questions/7948291/is-there-a-built-in-product-in-python

could find the product of items in a list by importing the mul operator python list product share improve this question.. it is not hard to make your own using reduce and operator.mul def prod iterable return reduce operator.mul iterable 1 prod..

Intercept operator lookup on metaclass

http://stackoverflow.com/questions/8637254/intercept-operator-lookup-on-metaclass

__getattr__ self name if name in '__add__' '__sub__' '__mul__' ... func lambda ... #generate magic function return func.. Some black magic let's you achieve your goal operators add mul class OperatorHackiness object Use this base class if you want.. want your object to intercept __add__ __iadd__ __radd__ __mul__ etc. using __getattr__. __getattr__ will called at most _once_..

python calculator program [closed]

http://stackoverflow.com/questions/13664759/python-calculator-program

A int raw_input Enter A B int raw_input Enter B c A B def Mul print Enter the two numbers to Multiply A int raw_input Enter.. Enter B c A B def Mul print Enter the two numbers to Multiply A int raw_input Enter A B int raw_input Enter B c A B def.. ' sub c elif CHOICE 3 print 'MULTIPLYING TWO NUMBERS ' Mul c elif CHOICE 4 print DIVIDEING TWO NUMBERS Div c elif CHOICE..

Differential Operator usable in Matrix form, in Python module Sympy

http://stackoverflow.com/questions/15463412/differential-operator-usable-in-matrix-form-in-python-module-sympy

'D' return sympy.diff self other.var else return Mul self other #... It works pretty well but there should be a better..

Avoid sorting args in Python module Sympy

http://stackoverflow.com/questions/16240084/avoid-sorting-args-in-python-module-sympy

In this case the order of the args list when creating a Mul object is very important to guarantee that the differentiation.. The issue is that when the following is done input t z x Mul input .args It returns t x z because some rearrangement in args..

Benchmarking (python vs. c++ using BLAS) and (numpy)

http://stackoverflow.com/questions/7596612/benchmarking-python-vs-c-using-blas-and-numpy

function _blaslib ctypes.cdll.LoadLibrary libblas.so def Mul m1 m2 i r no_trans c_char n n c_int i one c_float 1.0 zero c_float.. this r numpy.zeros i i numpy.float32 tBlas timeit.Timer Mul m1 m2 i r import numpy from __main__ import i m1 m2 r Mul rBlas.append.. Mul m1 m2 i r import numpy from __main__ import i m1 m2 r Mul rBlas.append i tBlas.repeat 20 1 3. c calling BLAS through a..