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annotate pycall.cc @ 428:3af3665348a1

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Also update doctests in compiled functions * pycall.cc, pyeval.cc, pyexec.cc: Update doctests. * @pyobject/dummy.m, @pyobject/cell.m: Use FIXME and https in comments.
author Mike Miller <mtmiller@octave.org>
date Thu, 22 Feb 2018 15:55:15 -0800
parents 6b9de18b4bdd
children
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1 /*
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2
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3 Copyright (C) 2015-2016 Mike Miller
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4
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5 This file is part of Pytave.
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6
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7 Pytave is free software: you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation, either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Pytave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Pytave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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21 */
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22
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23 #if defined (HAVE_CONFIG_H)
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24 # include <config.h>
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25 #endif
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26
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27 #include <Python.h>
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28 #include <octave/oct.h>
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29
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30 #include "oct-py-eval.h"
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31 #include "oct-py-init.h"
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32 #include "oct-py-object.h"
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33 #include "oct-py-types.h"
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34 #include "oct-py-util.h"
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35
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36 DEFUN_DLD (pycall, args, nargout,
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37 "-*- texinfo -*-\n\
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38 @deftypefn {} {} pycall (@var{func})\n\
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39 @deftypefnx {} {@var{x} =} pycall (@var{func})\n\
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40 @deftypefnx {} {@var{x} =} pycall (@var{func}, @var{arg1}, @var{arg2}, @dots{})\n\
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41 Call a Python function or callable, passing Octave values as arguments.\n\
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42 \n\
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43 Examples:\n\
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44 @example\n\
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45 @group\n\
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46 pycall (\"float\", 6)\n\
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47 @result{} 6\n\
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48 pycall (\"os.getuid\")\n\
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49 @result{} ...\n\
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50 pycall (\"math.sqrt\", 2)\n\
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51 @result{} 1.4142\n\
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52 @end group\n\
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53 @end example\n\
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54 \n\
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55 If the callable has no return, and an lvalue is specified, it will be set\n\
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56 to @code{None}. However, if no lvalue was specified, @code{ans} will not\n\
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57 be set. For example:\n\
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58 @example\n\
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59 @group\n\
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60 s = pyeval (\"set([1, 2])\");\n\
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61 pycall (s.add, 3)\n\
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62 \n\
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63 r = pycall (s.add, 4)\n\
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64 @result{} r = [Python object of type NoneType]\n\
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65 \n\
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66 None\n\
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67 \n\
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68 @end group\n\
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69 @end example\n\
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70 \n\
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71 @seealso{pyeval, pyexec}\n\
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72 @end deftypefn")
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73 {
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74 octave_value_list retval;
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75 std::string id;
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76
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77 int nargin = args.length ();
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78
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79 if (nargin < 1)
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80 {
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81 print_usage ();
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82 return retval;
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83 }
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84
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85 if (! (args(0).is_string () || (args(0).is_object ()
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86 && args(0).class_name () == "pyobject")))
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87 error ("pycall: FUNC must be a string or a Python reference");
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88
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89 pytave::py_init ();
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90
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91 pytave::python_object callable;
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92 if (args(0).is_string ())
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93 {
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94 callable = pytave::py_find_function (args(0).string_value ());
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95 if (! callable)
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96 error ("pycall: no such Python function or callable: %s",
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97 args(0).string_value ().c_str ());
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98 }
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99 else
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100 {
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101 callable = pytave::pyobject_unwrap_object (args(0));
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102 if (! callable)
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103 error("pycall: FUNC must be a valid Python reference");
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104 }
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105
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106 octave_value_list arglist = args.slice (1, nargin - 1);
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107 pytave::python_object res = pytave::py_call_function (callable, arglist);
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108
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109 // Ensure reasonable "ans" behaviour, consistent with Python's "_".
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110 if (nargout > 0 || ! res.is_none ())
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111 retval(0) = pytave::py_implicitly_convert_return_value (res);
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112
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113 return retval;
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114 }
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115
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116 /*
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117 %!assert (isreal (pycall ("random.random")))
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118 %!assert (double (pycall ("math.exp", 3)), exp (3))
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119 %!assert (double (pycall ("math.trunc", pi)), fix (pi))
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120 %!assert (double (pycall ("math.sqrt", 2)), sqrt (2))
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121 %!assert (double (pycall ("cmath.sqrt", 2j)), sqrt (2j))
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122 %!assert (double (pycall ("int", 10.2)), 10)
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123 %!assert (isa (pycall ("os.getcwd"), "pyobject"))
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124 %!assert (isa (pycall ("object"), "pyobject"))
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125 %!assert (isa (pycall ("dict"), "pyobject"))
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126 %!assert (isa (pycall ("list"), "pyobject"))
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127 %!assert (isa (pycall ("tuple"), "pyobject"))
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128
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129 ## Test argument type conversion of values into Python
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130 %!test
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131 %! pyexec (["def typename(x):\n" ...
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132 %! " s = type(x).__name__\n" ...
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133 %! " if s == 'long':\n" ...
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134 %! " return 'int'\n" ...
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135 %! " return s"]);
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136 %!assert (char (pycall ("typename", 0)), "float")
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137 %!assert (char (pycall ("typename", pi)), "float")
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138 %!assert (char (pycall ("typename", 2j)), "complex")
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139 %!assert (char (pycall ("typename", int32 (0))), "int")
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140 %!assert (char (pycall ("typename", false)), "bool")
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141 %!assert (char (pycall ("typename", true)), "bool")
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142 %!assert (char (pycall ("typename", "Hello world")), "str")
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diff changeset
143 %!assert (char (pycall ("typename", char ([1, 2, 3]))), "str")
190
ac377ace2ee4 More unit tests of pycall and pyeval
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parents: 184
diff changeset
144
303
0d94e42bacf6 Convert Octave cell array to Python list (fixes issue #41)
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diff changeset
145 ## Test construction of sequence types from cell arrays
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diff changeset
146 %!assert (char (pycall ("list")), "[]")
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parents: 281
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147 %!assert (char (pycall ("list", {})), "[]")
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148 %!assert (char (pycall ("list", {1, 2, 3})), "[1.0, 2.0, 3.0]")
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parents: 281
diff changeset
149 %!assert (char (pycall ("list", {int8(1), int8(2), int8(3)})), "[1, 2, 3]")
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diff changeset
150 %!assert (char (pycall ("tuple")), "()")
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diff changeset
151 %!assert (char (pycall ("tuple", {})), "()")
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parents: 281
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152 %!assert (char (pycall ("tuple", {1, 2, 3})), "(1.0, 2.0, 3.0)")
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parents: 281
diff changeset
153 %!assert (char (pycall ("tuple", {int8(1), int8(2), int8(3)})), "(1, 2, 3)")
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parents: 281
diff changeset
154 %!error (pycall ("list", {1, 2, 3; 4, 5, 6}))
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parents: 281
diff changeset
155 %!error (pycall ("dict", {1, 2, 3}))
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parents: 281
diff changeset
156
399
692cecebc71f Error on attempt to convert a char array to Python str (fixes issue #75)
Mike Miller <mtmiller@octave.org>
parents: 371
diff changeset
157 ## Test failure to convert char arrays to strings
692cecebc71f Error on attempt to convert a char array to Python str (fixes issue #75)
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diff changeset
158 %!error (pycall ("str", ("hello")'))
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159 %!error (pycall ("str", ["hello"; "world"]))
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160
334
252b458bd904 Add %!tests of dict creation and equality
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diff changeset
161 ## Test construction of dict from pyargs
252b458bd904 Add %!tests of dict creation and equality
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diff changeset
162 %!test
252b458bd904 Add %!tests of dict creation and equality
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163 %! a = pycall ("dict", pyargs ("a", 1, "b", 2, "c", 3));
365
087e7bc3697f Do not automatically convert Python strings to Octave strings (fixes issue #65)
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parents: 364
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164 %! assert (sort (cellfun (@char, cell (pycall ("list", a.keys ())), "uniformoutput", false)), {"a", "b", "c"})
334
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parents: 333
diff changeset
165 %! assert (sort (double (pycall ("array.array", "d", a.values ()))), [1, 2, 3])
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diff changeset
166
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parents: 333
diff changeset
167 ## Test copy construction of dict from dict
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diff changeset
168 %!test
252b458bd904 Add %!tests of dict creation and equality
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diff changeset
169 %! a = pycall ("dict", pyargs ("a", 1, "b", 2, "c", 3));
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diff changeset
170 %! b = pycall ("dict", a);
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parents: 333
diff changeset
171 %! assert (isequal (a, b))
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diff changeset
172
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parents: 333
diff changeset
173 ## Test construction of dict from sequence of key value pairs
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diff changeset
174 %!test
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parents: 333
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175 %! a = pycall ("dict", pyargs ("a", 1, "b", 2, "c", 3));
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parents: 333
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176 %! b = pycall ("dict", pycall ("zip", {"a", "b", "c"}, {1, 2, 3}));
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parents: 333
diff changeset
177 %! assert (isequal (a, b))
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diff changeset
178
198
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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parents: 197
diff changeset
179 ## Test round trip type preservation / conversion
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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diff changeset
180 %!test
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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parents: 197
diff changeset
181 %! pyexec ("def roundtrip(x): return x");
365
087e7bc3697f Do not automatically convert Python strings to Octave strings (fixes issue #65)
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parents: 364
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182 %! values = { 0, pi, 2j, eps, false, true };
198
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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parents: 197
diff changeset
183 %! for i = 1:numel (values)
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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diff changeset
184 %! assert (pycall ("roundtrip", values{i}), values{i});
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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diff changeset
185 %! endfor
377f2dc057ea pycall: add more tests for preservation of values to and from Python
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diff changeset
186
304
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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187 ## Test conversion of integer types into Python
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
188 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 0"), int8 (0)))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
189 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == -2**7 "), intmin ("int8")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
190 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 2**7 -1"), intmax ("int8")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
191 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 0"), intmin ("uint8")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
192 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 2**8 -1"), intmax ("uint8")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
193 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 0"), int16 (0)))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
194 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == -2**15 "), intmin ("int16")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
195 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 2**15-1"), intmax ("int16")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
196 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 0"), intmin ("uint16")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
197 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 2**16-1"), intmax ("uint16")))
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parents: 303
diff changeset
198 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 0"), int32 (0)))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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diff changeset
199 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == -2**31 "), intmin ("int32")))
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diff changeset
200 %!assert (pycall (pyeval ("lambda x: type(x) == type(0) and x == 2**31-1"), intmax ("int32")))
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diff changeset
201 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == 0"), intmin ("uint32")))
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parents: 303
diff changeset
202 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == 2**32-1"), intmax ("uint32")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
203 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == 0"), int64 (0)))
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parents: 303
diff changeset
204 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == -2**63 "), intmin ("int64")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
205 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == 2**63-1"), intmax ("int64")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
206 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == 0"), intmin ("uint64")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
207 %!assert (pycall (pyeval ("lambda x: type(x) == type(2**64) and x == 2**64-1"), intmax ("uint64")))
a133564f4af7 Convert integer types to appropriate Python int or long types (fixes issue #55)
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parents: 303
diff changeset
208
411
3613ffbd52b2 Overhaul implicit conversion of arguments and return values
Mike Miller <mtmiller@octave.org>
parents: 410
diff changeset
209 %!error <unable to convert unhandled Octave type>
263
0fc1a58d7e89 Delete unnecessary newlines in one-line function definitions
Mike Miller <mtmiller@octave.org>
parents: 248
diff changeset
210 %! pyexec ("def intwrapper(x): return int(x)");
193
28173dc00d51 Add catch for value_convert_exception and a test. (fixes issue #16)
Abhinav Tripathi <genuinelucifer@gmail.com>
parents: 190
diff changeset
211 %! pycall ("intwrapper", ftp ());
28173dc00d51 Add catch for value_convert_exception and a test. (fixes issue #16)
Abhinav Tripathi <genuinelucifer@gmail.com>
parents: 190
diff changeset
212
328
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
213 ## Test conversion of integer types from Python
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
214 %!test
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
215 %! if (pyeval ("__import__('sys').hexversion >= 0x03000000"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
216 %! assert (isa (pycall ("int", 0), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
217 %! assert (isa (pycall ("int", 2^31-1), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
218 %! assert (isa (pycall ("int", -2^31), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
219 %! assert (double (pycall ("int", 0)), 0)
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
Mike Miller <mtmiller@octave.org>
parents: 327
diff changeset
220 %! assert (double (pycall ("int", 2^31-1)), 2^31-1)
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
Mike Miller <mtmiller@octave.org>
parents: 327
diff changeset
221 %! assert (double (pycall ("int", -2^31)), -2^31)
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
Mike Miller <mtmiller@octave.org>
parents: 327
diff changeset
222 %! else
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
223 %! assert (pycall ("int", 0), int64 (0))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
Mike Miller <mtmiller@octave.org>
parents: 327
diff changeset
224 %! assert (pycall ("int", 2^31-1), int64 (2^31-1))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
Mike Miller <mtmiller@octave.org>
parents: 327
diff changeset
225 %! assert (pycall ("int", -2^31), int64 (-2^31))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
226 %! assert (isa (pycall ("long", 0), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
227 %! assert (isa (pycall ("long", 2^31-1), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
228 %! assert (isa (pycall ("long", -2^31), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
229 %! assert (double (pycall ("long", 0)), 0)
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
230 %! assert (double (pycall ("long", 2^31-1)), 2^31-1)
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
231 %! assert (double (pycall ("long", -2^31)), -2^31)
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parents: 327
diff changeset
232 %! endif
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parents: 327
diff changeset
233 %!assert (isa (pycall ("int", 2^100), "pyobject"))
5782d7932529 Automatically convert Python 2 'int' type to Octave int64 (fixes issue #56)
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parents: 327
diff changeset
234
180
5f0d94afebe2 Added some basic tests
Abhinav Tripathi <genuinelucifer@gmail.com>
parents: 178
diff changeset
235 %!test
184
8b97647e48f1 maint: whitespace fixes for cset 2b03585d4ddd
Mike Miller <mtmiller@octave.org>
parents: 183
diff changeset
236 %! pyexec (["def pyfunc(x):\n" ...
197
d6c44d680482 Convert Octave scalars into Python scalars (fixes issue #14)
Mike Miller <mtmiller@octave.org>
parents: 195
diff changeset
237 %! " if x is True:\n return 30\n" ...
d6c44d680482 Convert Octave scalars into Python scalars (fixes issue #14)
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parents: 195
diff changeset
238 %! " elif x is False:\n return 20\n" ...
184
8b97647e48f1 maint: whitespace fixes for cset 2b03585d4ddd
Mike Miller <mtmiller@octave.org>
parents: 183
diff changeset
239 %! " else:\n return 10"]);
327
15c20ab4b80a Do not automatically convert Python integer types to Octave (see issue #56)
Mike Miller <mtmiller@octave.org>
parents: 309
diff changeset
240 %! assert (double (pycall ("pyfunc", true)), 30)
15c20ab4b80a Do not automatically convert Python integer types to Octave (see issue #56)
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parents: 309
diff changeset
241 %! assert (double (pycall ("pyfunc", false)), 20)
15c20ab4b80a Do not automatically convert Python integer types to Octave (see issue #56)
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parents: 309
diff changeset
242 %! assert (double (pycall ("pyfunc", 10)), 10)
231
6fffa6219b2c Properly extract exception text from Python (fixes issue #24)
Abhinav Tripathi <genuinelucifer@gmail.com>
parents: 198
diff changeset
243
6fffa6219b2c Properly extract exception text from Python (fixes issue #24)
Abhinav Tripathi <genuinelucifer@gmail.com>
parents: 198
diff changeset
244 %!error <NameError>
263
0fc1a58d7e89 Delete unnecessary newlines in one-line function definitions
Mike Miller <mtmiller@octave.org>
parents: 248
diff changeset
245 %! pyexec ("def raiseException(): raise NameError('oops')")
231
6fffa6219b2c Properly extract exception text from Python (fixes issue #24)
Abhinav Tripathi <genuinelucifer@gmail.com>
parents: 198
diff changeset
246 %! pycall ("raiseException")
239
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
247
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
248 ## None as a return value
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
249 %!test
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
250 %! f = pyeval ("lambda: None");
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
251 %! r = pycall (f);
368
4d54fb68de71 __py_is_none__: new compiled function to test whether an object is None
Mike Miller <mtmiller@octave.org>
parents: 365
diff changeset
252 %! assert (__py_is_none__ (r))
239
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
253
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
254 ## But returning None will not set "ans"
0401489ea58c Allow pycall to return None
Colin Macdonald <cbm@m.fsf.org>
parents: 235
diff changeset
255 %!test
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Colin Macdonald <cbm@m.fsf.org>
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256 %! f = pyeval ("lambda: None");
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257 %! clear ans
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258 %! pycall (f);
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259 %! assert (! exist ("ans", "var"))
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260 */