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doc: which Python executable and how to change it (bug #62733) * python.m: Document difference between Unix and Windows. Fix whitespace.
author Colin Macdonald <cbm@m.fsf.org>
date Sat, 09 Jul 2022 22:05:40 -0700
parents 0f4d16af143b
children
comparison
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31143:b3ca7f891750 31144:22305b923761
31 ## arguments. 31 ## arguments.
32 ## 32 ##
33 ## Return output in @var{output} and optional status in @var{status}. If 33 ## Return output in @var{output} and optional status in @var{status}. If
34 ## @var{scriptfile} is not an absolute filename it is searched for in the 34 ## @var{scriptfile} is not an absolute filename it is searched for in the
35 ## current directory and then in the Octave loadpath. 35 ## current directory and then in the Octave loadpath.
36 ##
37 ## Programming Note: On UNIX systems, the script will be executed by
38 ## @command{python3} and on Windows by @command{python}. You can override
39 ## these defaults by setting the @env{PYTHON} environment variable, for example
40 ## from within Octave using @code{setenv PYTHON /usr/local/bin/python3}.
41 ##
36 ## @seealso{system, perl} 42 ## @seealso{system, perl}
37 ## @end deftypefn 43 ## @end deftypefn
38 44
39 function [output, status] = python (scriptfile, varargin) 45 function [output, status] = python (scriptfile, varargin)
40 46
59 [status, output] = system ([pyexec " " scriptfile, ... 65 [status, output] = system ([pyexec " " scriptfile, ...
60 sprintf(" %s", varargin{:})]); 66 sprintf(" %s", varargin{:})]);
61 67
62 endfunction 68 endfunction
63 69
64 function pyexec = get_python_executable () 70 function pyexec = get_python_executable ()
65 71
66 pyexec = getenv ("PYTHON"); 72 pyexec = getenv ("PYTHON");
67 if (isempty (pyexec)) 73 if (isempty (pyexec))
68 ## PEP394 says Python 3 installs should all provide this command 74 ## PEP394 says Python 3 installs should all provide this command
69 pyexec = "python3"; 75 pyexec = "python3";