Add setStringVar to Context Object Python Bindings (#2198)

* Expose setStringVar to Python Bindings Context Object

Signed-off-by: Michael De Caria <[email protected]>

* Add setStringVar to Python Context Test

Signed-off-by: Michael De Caria <[email protected]>

---------

Signed-off-by: Michael De Caria <[email protected]>
Co-authored-by: Doug Walker <[email protected]>

Author: mdecaria

src/bindings/python/PyContext.cpp

@@ -168,6 +168,8 @@ void bindPyContext(py::module & m)
             { 
                 return StringVarIterator(self); 
             })
+        .def("setStringVar", &Context::setStringVar, "name"_a, "value"_a, 
+             DOC(Context, setStringVar))
         .def("clearStringVars", &Context::clearStringVars, 
              DOC(Context, clearStringVars))
         .def("getEnvironmentMode", &Context::getEnvironmentMode, 

tests/python/ContextTest.py

@@ -47,6 +47,8 @@ def test_interface(self):
         cont['TEST1'] = 'foobar'
         self.assertEqual(len(cont), 2)
         self.assertEqual('/foo/foobar/bar', cont.resolveStringVar('/foo/${TEST1}/bar'))
+        cont.setStringVar('foo', 'bar')
+        self.assertEqual(len(cont), 3)
         cont.clearStringVars()
         self.assertEqual(len(cont), 0)
         self.assertEqual(OCIO.ENV_ENVIRONMENT_LOAD_PREDEFINED, cont.getEnvironmentMode())