# HG changeset patch
# User Mike Miller <mtmiller@octave.org>
# Date 1469829255 25200
# Node ID 3bdd924a5fc71110cb9127f2b17d9f753d162c4e
# Parent  e4175c38b0122ae3afb16dd4e9cc4ffa4b12fdd1
py: call function or object with no arguments to be consistent with Octave

* @py/subsref.m: If the returned Python object is callable and no argument
list is given, call it with no arguments.

diff -r e4175c38b012 -r 3bdd924a5fc7 @py/subsref.m
--- a/@py/subsref.m	Fri Jul 29 14:51:24 2016 -0700
+++ b/@py/subsref.m	Fri Jul 29 14:54:15 2016 -0700
@@ -56,6 +56,16 @@
     y = subsref (y, idx(2:end));
   endif
 
+  ## If the *last* indexing operation is ".name", and the object returned
+  ## is a Python callable, then call it with no arguments to be compatible
+  ## with how Octave functions are evaluated.
+  if (idx(end).type == ".")
+    is_callable = pyeval ("lambda x: isinstance(x, __import__('collections').Callable)");
+    if (pycall (is_callable, y))
+      y = pycall (y);
+    endif
+  endif
+
   is_none = pyeval ("lambda x: x is None");
   if (nargout > 0 || ! pycall (is_none, y))
     varargout{1} = y;