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User:Jorend/Python set usage: Difference between revisions
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User:Jorend/Python set usage (view source)
Revision as of 12:24, 16 February 2012
, 16 February 2012no edit summary
(Created page with "=Abstract= A <code>Set()</code> constructor is proposed for a future edition of the ECMAScript programming language standard. Should the constructor take a single iterable argum...") |
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=Methodology= | =Methodology= | ||
A copy of | A copy of the Python standard library and a corresponding Python executable were obtained using the commands: | ||
The script finds each set-creation expression. | hg clone http://hg.python.org/cpython | ||
cd cpython | |||
./configure | |||
make | |||
(<code>hg</code> is [http://mercurial.selenic.com/ Mercurial]; it can be installed on most Linux systems using something like <code>sudo apt-get install mercurial</code>.) | |||
(On Mac OS X Lion, configure with <code>CC=gcc-apple-4.2 ./configure</code> instead. Apple’s LLVM-based gcc that ships with Lion can’t build Python.) | |||
The script below was then run in the same directory. The script searches the <code>Lib</code> directory for Python files. It disregards unit tests, as they typically contain very unusual code. It parses each other file using the Python parser and finds each set-creation expression. The expression <code>set()</code>, which creates an empty set, is disregarded; the rest are classified as one of the following: | |||
* A - statically known number of values (supporting variable arguments) | * A - statically known number of values (supporting variable arguments) | ||
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main() | main() | ||
= Results = | |||