python Programming Glossary: nonzero

http://stackoverflow.com/questions/12311148/print-number-in-engineering-format

zero dotplace leftdigits 1 3 1 else # engineering notation nonzero dotplace leftdigits 1 3 1 and you can see that unless it already..

switch to different user using fabric

http://stackoverflow.com/questions/12641514/switch-to-different-user-using-fabric

out su incorrect password Fatal error sudo received nonzero return code 1 while executing Requested touch x Executed su..

Python: suggestions to improve a chunk-by-chunk code to read several millions of points

http://stackoverflow.com/questions/12769353/python-suggestions-to-improve-a-chunk-by-chunk-code-to-read-several-millions-of

import numpy import numpy as np from numpy import nonzero from liblas import file as lasfile from shapely.geometry import.. where are present the points inside the polygon index nonzero points_inside_poly points verts 0 # if index is not empty do..

Evaluation of boolean expressions in Python

http://stackoverflow.com/questions/1452489/evaluation-of-boolean-expressions-in-python

instances of user defined classes if the class defines a __nonzero__ or __len__ method when that method returns the integer zero..

Shortest Sudoku Solver in Python - How does it work?

http://stackoverflow.com/questions/201461/shortest-sudoku-solver-in-python-how-does-it-work

Each element is either a number if the first expression is nonzero or a character if the first expression is zero . m is ruled..

How to continue a task when Fabric receives an error

http://stackoverflow.com/questions/3876936/how-to-continue-a-task-when-fabric-receives-an-error

anything goes wrong such as a remote program returning a nonzero return value or your fabfile 䏭 Python code encountering an exception..

Iterating through a scipy.sparse vector (or matrix)

http://stackoverflow.com/questions/4319014/iterating-through-a-scipy-sparse-vector-or-matrix

or matrix I'm wondering what the best way is to iterate nonzero entries of sparse matrices with scipy.sparse. For example if.. the iterator is touching every element not just the nonzero entries. I've had a look at the API http docs.scipy.org doc.. is much faster than my original suggestion using nonzero . Sven Marnach's suggestion to use itertools.izip also improves..

binning data in python with scipy/numpy

http://stackoverflow.com/questions/6163334/binning-data-in-python-with-scipy-numpy

numpy import def get_bin_mean a b_start b_end ind_upper nonzero a b_start 0 a_upper a ind_upper a_range a_upper nonzero a_upper.. nonzero a b_start 0 a_upper a ind_upper a_range a_upper nonzero a_upper b_end 0 mean_val mean a_range return mean_val data rand..

Terminating a Python script

http://stackoverflow.com/questions/73663/terminating-a-python-script

integer zero is considered 𦨴uccessful termination and any nonzero value is considered 𦡞bnormal termination by shells and the like...

Numpy array: how to find index of first occurrence of item

http://stackoverflow.com/questions/7632963/numpy-array-how-to-find-index-of-first-occurrence-of-item

the first occurrence itemindex numpy.where array item 0 0 nonzero array item 0 0 Note 1 none of the answers from that question..

if A vs if A is not None:

http://stackoverflow.com/questions/7816363/if-a-vs-if-a-is-not-none

improve this question The statement if A will call A.__nonzero__ see Special method names documentation and use the return.. return value of that function. Here's the summary object.__nonzero__ self Called to implement truth value testing and the built.. defined and the object is considered true if its result is nonzero. If a class defines neither __len__ nor __nonzero__ all its..

Assign class boolean value in Python

http://stackoverflow.com/questions/9787890/assign-class-boolean-value-in-python

share improve this question You need to implement the __nonzero__ method on your class. This should return True or False to.. MyClass object def __init__ self val self.val val def __nonzero__ self return self.val 0 #This is an example you can use any.. any condition x MyClass 0 if not x print 'x is false' If __nonzero__ has not been defined the implementation will call __len__..