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Fix fieldnames cell array orientation * @pyobject/fieldnames.m: Fix orientation.
author Colin Macdonald <cbm@m.fsf.org>
date Wed, 03 Aug 2016 21:08:06 -0700
parents df1bddece9d5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; either version 3 of the License,
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8 ## or (at your option) any later version.
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9 ##
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10 ## This software is distributed in the hope that it will be useful,
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11 ## but WITHOUT ANY WARRANTY; without even the implied warranty
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12 ## of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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13 ## the GNU 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
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16 ## License along with this software; see the file COPYING.
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17 ## If not, see <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @documentencoding UTF-8
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21 ## @defmethod @@pyobject fieldnames (@var{x})
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22 ## List the properties of a Python object.
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23 ##
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24 ## Returns a cell array of strings containing the names of the properties
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25 ## of @var{x}.
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26 ##
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27 ## Example:
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28 ## @example
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29 ## @group
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30 ## pyexec ("import sys")
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31 ## sys = pyeval ("sys");
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32 ## fieldnames (sys)
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33 ## @result{} ans =
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34 ## @{
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35 ## [1,1] = ...
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36 ## [2,1] = ...
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37 ## ... = path
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38 ## ... = version
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39 ## ...
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40 ## @}
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41 ## @end group
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42 ## @end example
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43 ##
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44 ## @seealso{fieldnames, @@pyobject/methods}
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45 ## @end defmethod
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46
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47
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48 function names = fieldnames (x)
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49
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50 cmd = pyeval (["lambda x: [a for a in dir(x)" ...
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51 " if not callable(getattr(x, a))" ...
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52 " and not isinstance(getattr(x, a), __import__('types').ModuleType)" ...
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53 " and not a.startswith('_')]"]);
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54
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55 names_obj = pycall (cmd, x);
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56 names = cellfun (@char, cell (names_obj), "uniformoutput", false);
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57 names = names(:);
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58
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59 endfunction
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60
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61
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62 %!test
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63 %! sys = pycall ("__import__", "sys");
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64 %! lst = fieldnames (sys);
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65 %! assert (iscell (lst))
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66 %! assert (length (lst) >= 32)
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67 %! assert (any (strcmp (lst, "path")))
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68 %! assert (any (strcmp (lst, "prefix")))
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69 %! assert (any (strcmp (lst, "stderr")))
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70 %! assert (any (strcmp (lst, "stdin")))
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71 %! assert (any (strcmp (lst, "stdout")))
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72 %! assert (any (strcmp (lst, "version")))
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73
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74 %!test
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75 %! lst = fieldnames (pyeval ("__builtins__"));
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76 %! assert (any (strcmp (lst, "False")))
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77 %! assert (any (strcmp (lst, "None")))
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78 %! assert (any (strcmp (lst, "True")))
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79
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80 %!assert (fieldnames (pyeval ("object()")), cell (0, 1))
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81 %!assert (fieldnames (pyeval ("{}")), cell (0, 1))
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82 %!assert (ismember ("denominator", fieldnames (pycall ("fractions.Fraction"))))