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python Programming Glossary: pointWhich Python memory profiler is recommended? [closed] http://stackoverflow.com/questions/110259/which-python-memory-profiler-is-recommended this question Heapy is quite simple to use. At some point in your code you have to write the following from guppy import..
http://stackoverflow.com/questions/13058458/python-list-index list around memory Python chooses to just use a reference 'pointer' in C terms . If you assign one to another variable you assign.. to it. This means that you can have two variables pointing to the same list in memory a 1 b a a 0 2 print b 2 So in.. 2 So in your first line of code you have 4 0 . Now 0 is a pointer to the value 0 in memory and when you multiply it you get..
Is there a difference between `==` and `is` in python? http://stackoverflow.com/questions/132988/is-there-a-difference-between-and-is-in-python this question is will return True if two variables point to the same object if the objects referred to by the variables..
http://stackoverflow.com/questions/233673/lexical-closures-in-python print f 2 As the commented line shows i is unknown at that point. Still it prints 4 4 4 . python closures lazy evaluation late..
An executable Python app [closed] http://stackoverflow.com/questions/2933/an-executable-python-app a GUI with it can anybody shed some light on this and point me in the right direction please python gui deployment release..
Dynamic module import in Python http://stackoverflow.com/questions/301134/dynamic-module-import-in-python don't want to get in to using eggs or extension points. This is not an open source project and I don't expect there.. project and I don't expect there to be plugins . The point is to simplify the main application code and remove the need..
http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat translations. Before you ask What the hell is the point of this The answer is... It'll be an interesting learning experience... you try to wrestle it into doing something else. At that point you find out the machinery is wired to do what it originally..
How do I unload (reload) a Python module? http://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module to zero. The names in the module namespace are updated to point to any new or changed objects. Other references to the old objects..
python limiting floats to two decimal points http://stackoverflow.com/questions/455612/python-limiting-floats-to-two-decimal-points limiting floats to two decimal points I want a to be rounded to 13.95 a 13.949999999999999 round.. function does not work the way I expect . python floating point floating point precision share improve this question You.. work the way I expect . python floating point floating point precision share improve this question You are running into..
http://stackoverflow.com/questions/509211/pythons-slice-notation end step # start through not past end by step The key point to remember is that the end value represents the first value..
Python rounding error with float numbers http://stackoverflow.com/questions/5997027/python-rounding-error-with-float-numbers powers of two can't be represented exactly as a floating point number it needs to be approximated. Sometimes the closest approximation..
Syntax error on print with Python 3 http://stackoverflow.com/questions/826948/syntax-error-on-print-with-python-3 is giving a syntax here. Hoping someone might be able to point me in the right direction. Thanks Python 3.0.1 r301 69561 Feb.. SyntaxError invalid syntax exit Windows path is correctly pointing to the python directory. python python 3.x share improve..
How do I check if a file exists using Python? http://stackoverflow.com/questions/82831/how-do-i-check-if-a-file-exists-using-python only tells you that the file existed at that point. In the tiny interval between that and running code that depends..
Python - time.clock() vs. time.time() - accuracy? http://stackoverflow.com/questions/85451/python-time-clock-vs-time-time-accuracy On Unix return the current processor time as a floating point number expressed in seconds. The precision and in fact the very..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python elaboration people can make or good references people can point to as to why this sync happens what it means when it's useful.. without any memory copying. I suspect that at this point other parts of the code will become the bottleneck so I don't..
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference it and after you're done the outer reference will still point at the original object. If you pass an immutable object to a.. was a copy of the outer_list reference and we had the_list point to a new list but there was no way to change where outer_list.. a new list but there was no way to change where outer_list pointed. String an immutable type It's immutable so there's nothing..
Python math is wrong [duplicate] http://stackoverflow.com/questions/11950819/python-math-is-wrong and deciphered it first and now so will you The Floating Point Guide Treat this document with care Only share this with people..
What are “named tuples” in Python? http://stackoverflow.com/questions/2970608/what-are-named-tuples-in-python becomes more readable from collections import namedtuple Point namedtuple 'Point' 'x y' pt1 Point 1.0 5.0 pt2 Point 2.5 1.5.. from collections import namedtuple Point namedtuple 'Point' 'x y' pt1 Point 1.0 5.0 pt2 Point 2.5 1.5 from math import.. import namedtuple Point namedtuple 'Point' 'x y' pt1 Point 1.0 5.0 pt2 Point 2.5 1.5 from math import sqrt line_length..
http://stackoverflow.com/questions/406361/floating-point-limitations Point Limitations My code a '2.3' I wanted to display a as a floating..
UnicodeDecodeError when redirecting to file http://stackoverflow.com/questions/4545661/unicodedecodeerror-when-redirecting-to-file have a unique number associated with them called the Code Point . This number is the one used in Python's u and U Unicode string..
Python rounding error with float numbers http://stackoverflow.com/questions/5997027/python-rounding-error-with-float-numbers
Is it pythonic for a function to return multiple values? http://stackoverflow.com/questions/61605/is-it-pythonic-for-a-function-to-return-multiple-values Lisp . Sometimes it is sufficient to return x y instead of Point x y . Named tuples With the introduction of named tuples in.. named tuples instead of plain tuples. import collections Point collections.namedtuple 'Point' 'x y' x y Point 0 1 p Point x.. tuples. import collections Point collections.namedtuple 'Point' 'x y' x y Point 0 1 p Point x y x y p 0 1 Point x 0 y 1 p.x..
int((0.1+0.7)*10) = 7 in several languages. How to prevent this? http://stackoverflow.com/questions/6439140/int0-10-710-7-in-several-languages-how-to-prevent-this
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