python Programming Glossary: numeric
Why is if not someobj: better than if someobj == None: in Python? http://stackoverflow.com/questions/100732/why-is-if-not-someobj-better-than-if-someobj-none-in-python If the object has a __nonzero__ special method as do numeric built ins int and float it calls this method. It must either.. Generally I would recommend to use the first test with non numerical values to use the test for equality when you want to compare..
Large, persistent DataFrame in pandas http://stackoverflow.com/questions/11622652/large-persistent-dataframe-in-pandas file. It had about 200 000 rows and 200 columns of mostly numeric data. With SAS I can import a csv file into a SAS dataset and..
“Large data” work flows using pandas http://stackoverflow.com/questions/14262433/large-data-work-flows-using-pandas types continuous nominal and ordinal variables of both numeric and character data. I rarely append rows but I do perform many..
if x or y or z == blah http://stackoverflow.com/questions/15112125/if-x-or-y-or-z-blah to the first argument that is 'truthy' e.g. not False numeric 0 or empty see boolean expressions for details on what Python..
Python List vs. Array - when to use? http://stackoverflow.com/questions/176011/python-list-vs-array-when-to-use However if you want to do math on a homogeneous array of numeric data then you're much better off using NumPy which can automatically..
Can you monkey patch methods on core types in python? http://stackoverflow.com/questions/192649/can-you-monkey-patch-methods-on-core-types-in-python why you would want to alter the behavior of the built in numeric classes anyway. If you need to alter their behavior subclass..
convert integer to a string in a given numeric base in python http://stackoverflow.com/questions/2267362/convert-integer-to-a-string-in-a-given-numeric-base-in-python integer to a string in a given numeric base in python Python allows easy creation of an integer from..
Evaluating a mathematical expression in a string http://stackoverflow.com/questions/2371436/evaluating-a-mathematical-expression-in-a-string arithmetic expressions. Below I've rewrapped fourFn into a numeric parser class for easier reuse. from __future__ import division..
How to sort alpha numeric set in python http://stackoverflow.com/questions/2669059/how-to-sort-alpha-numeric-set-in-python to sort alpha numeric set in python I have a set set 'booklet' '4 sheets' '48 sheets'..
How do I check if a string is a number in Python? http://stackoverflow.com/questions/354038/how-do-i-check-if-a-string-is-a-number-in-python an extensive search of stack frames. The issue is that any numeric conversion function has two kinds of results A number if the..
A weighted version of random.choice http://stackoverflow.com/questions/3679694/a-weighted-version-of-random-choice the second item is its weight. The weights can be any numeric values what matters is the relative differences between them...
Parse String to Float or Int http://stackoverflow.com/questions/379906/parse-string-to-float-or-int String to Float or Int In Python how can I parse a numeric string like 545.2222 to its corresponding float value 542.2222..
What's the easiest way to add commas to an integer in Python? [duplicate] http://stackoverflow.com/questions/3909457/whats-the-easiest-way-to-add-commas-to-an-integer-in-python several others have suggested. The advantage is that then numeric output can be made to automatically follow the proper thousands..
In Python, how do I read the exif data for an image? http://stackoverflow.com/questions/4764932/in-python-how-do-i-read-the-exif-data-for-an-image This should give you a dictionary indexed by EXIF numeric tags. If you want the dictionary indexed by the actual EXIF..
Handling very large numbers in Python http://stackoverflow.com/questions/538551/handling-very-large-numbers-in-python self.cardSuit This would give each hand a numeric value that through modulo could tell me how many kings are in..
Python: Sort a dictionary by value http://stackoverflow.com/questions/613183/python-sort-a-dictionary-by-value read from 2 fields in a database a string field and a numeric field. The string field is unique so that is the key of the..
What does the Python Ellipsis object do? http://stackoverflow.com/questions/772124/what-does-the-python-ellipsis-object-do objects there but its main and intended use is in in the numeric python extension which adds a multidimensional array type. Since.. you can actually write ... Ellipsis Other than the various numeric types no I don't think it's used. As far as I'm aware it was..
Why does 4 < '3' return True in Python 2? http://stackoverflow.com/questions/7969552/why-does-4-3-return-true-in-python-2
Python faster than compiled Haskell? http://stackoverflow.com/questions/10357663/python-faster-than-compiled-haskell use read . Replace read with a function like this import Numeric fastRead String Int fastRead s case readDec s of n n I get a..
Python simulate keydown http://stackoverflow.com/questions/11906925/python-simulate-keydown VK_SLEEP 0x5F # Computer Sleep key VK_NUMPAD0 0x60 # Numeric keypad 0 key VK_NUMPAD1 0x61 # Numeric keypad 1 key VK_NUMPAD2.. VK_NUMPAD0 0x60 # Numeric keypad 0 key VK_NUMPAD1 0x61 # Numeric keypad 1 key VK_NUMPAD2 0x62 # Numeric keypad 2 key VK_NUMPAD3.. VK_NUMPAD1 0x61 # Numeric keypad 1 key VK_NUMPAD2 0x62 # Numeric keypad 2 key VK_NUMPAD3 0x63 # Numeric keypad 3 key VK_NUMPAD4..
Using NumPy and Cpython with Jython http://stackoverflow.com/questions/3097466/using-numpy-and-cpython-with-jython this question It's ironic considering that Jython and Numeric NumPy's ancestor were initiated by the same developer Jim Hugunin.. on sourceforge but the updated sources are on bitbucket . Numeric Python what jnumerical implements is not as slick and streamlined..
Maximum value for long integer http://stackoverflow.com/questions/9860588/maximum-value-for-long-integer a practical limit. Taken from this site . See the docs on Numeric Types where you'll see that Long integers have unlimited precision..
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