Fix T38402: invalid message for bad type assignments (Quat, Vector)

source/blender/python/mathutils/mathutils_Color.c

@@ -225,7 +225,7 @@ static int Color_ass_item(ColorObject *self, int i, PyObject *value)
 	if (f == -1 && PyErr_Occurred()) {  /* parsed item not a number */
 		PyErr_SetString(PyExc_TypeError,
 		                "color[item] = x: "
-		                "argument not a number");
+		                "assigned value not a number");
 		return -1;
 	}
 
@@ -722,7 +722,7 @@ static int Color_channel_hsv_set(ColorObject *self, PyObject *value, void *type)
 	if (f == -1 && PyErr_Occurred()) {
 		PyErr_SetString(PyExc_TypeError,
 		                "color.h/s/v = value: "
-		                "argument not a number");
+		                "assigned value not a number");
 		return -1;
 	}
 

source/blender/python/mathutils/mathutils_Euler.c

@@ -411,7 +411,7 @@ static int Euler_ass_item(EulerObject *self, int i, PyObject *value)
 	if (f == -1 && PyErr_Occurred()) {  /* parsed item not a number */
 		PyErr_SetString(PyExc_TypeError,
 		                "euler[attribute] = x: "
-		                "argument not a number");
+		                "assigned value not a number");
 		return -1;
 	}
 

source/blender/python/mathutils/mathutils_Quaternion.c

@@ -583,7 +583,7 @@ static int Quaternion_ass_item(QuaternionObject *self, int i, PyObject *ob)
 	if (scalar == -1.0f && PyErr_Occurred()) { /* parsed item not a number */
 		PyErr_SetString(PyExc_TypeError,
 		                "quaternion[index] = x: "
-		                "index argument not a number");
+		                "assigned value not a number");
 		return -1;
 	}
 

source/blender/python/mathutils/mathutils_Vector.c

@@ -1295,7 +1295,7 @@ static int vector_ass_item_internal(VectorObject *self, int i, PyObject *value,
 	if ((scalar = PyFloat_AsDouble(value)) == -1.0f && PyErr_Occurred()) { /* parsed item not a number */
 		PyErr_SetString(PyExc_TypeError,
 		                "vector[index] = x: "
-		                "index argument not a number");
+		                "assigned value not a number");
 		return -1;
 	}