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pyversion: new function to report Python runtime version and path information * pyversion.m: New function file.
author Mike Miller <mtmiller@octave.org>
date Tue, 16 Aug 2016 00:31:22 -0700
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341
b0d012e9975f pyversion: new function to report Python runtime version and path information
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1 ## Copyright (C) 2016 Mike Miller
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2 ##
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3 ## This file is part of Pytave.
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4 ##
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5 ## Pytave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Pytave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Pytave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {} {} pyversion
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21 ## @deftypefnx {} {@var{ver} =} pyversion
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22 ## @deftypefnx {} {[@var{ver}, @var{exec}, @var{loaded}] =} pyversion
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23 ## List information about the Python runtime used by Octave Python functions.
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24 ## @end deftypefn
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25
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26 function varargout = pyversion ()
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27
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28 if (nargin > 0)
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29 print_usage ();
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30 endif
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31
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32 ver = char (pycall ("sysconfig.get_python_version"));
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33
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34 if ((nargout == 0) || (nargout > 1))
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35 exec = char (py.sys.executable);
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36 endif
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37
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38 ## FIXME: determine whether the Python runtime has been loaded yet
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39 if ((nargout == 0) || (nargout > 2))
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40 loaded = true;
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41 endif
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42
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43 if (nargout == 0)
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44 dlllibrary = char (pycall ("sysconfig.get_config_var", "DLLLIBRARY"));
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45 if (isempty (dlllibrary))
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46 libdir = pycall ("sysconfig.get_config_var", "LIBDIR");
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47 ldlibrary = pycall ("sysconfig.get_config_var", "LDLIBRARY");
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48 else
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49 libdir = pycall ("sysconfig.get_config_var", "BINDIR");
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50 ldlibrary = dlllibrary;
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51 endif
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52 multiarch = pycall ("sysconfig.get_config_var", "MULTIARCH");
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53 lib = char (pycall ("os.path.join", libdir, multiarch, ldlibrary));
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54 prefix = char (pycall ("sysconfig.get_config_var", "prefix"));
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55
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56 printf (" version: \"%s\"\n", ver);
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57 printf (" executable: \"%s\"\n", exec);
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58 printf (" library: \"%s\"\n", lib);
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59 printf (" prefix: \"%s\"\n", prefix);
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60 printf (" loaded: %d\n", loaded);
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61 else
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62 if (nargout > 0)
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63 varargout{1} = ver;
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64 endif
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65 if (nargout > 1)
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66 varargout{2} = exec;
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67 endif
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68 if (nargout > 2)
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69 varargout{3} = loaded;
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70 endif
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71 endif
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72
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73 endfunction
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74
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75
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76 %!assert (ischar (pyversion ()))
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77
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78 %!test
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79 %! [m, n] = regexp (pyversion (), '^(\d\.\d)$');
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80 %! assert ([m, n], [1, 3])
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81
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82 %!test
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83 %! [~, ~, v] = pyversion ();
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84 %! assert (v, true)
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85
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86 %!error pyversion (1)
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87 %!error pyversion ("python")
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88 %!error pyversion ("/usr/bin/python")