Replace two remaining error by dgpyError.

src/entity-py.cc

@@ -96,7 +96,7 @@ namespace dynamicgraph {
 	try {
 	 name = entity->getName();
 	} catch(const std::exception& exc) {
-	  PyErr_SetString(error, exc.what());
+	  PyErr_SetString(dgpyError, exc.what());
 	  return NULL;
 	}
 	return Py_BuildValue("s", name.c_str());
@@ -127,7 +127,7 @@ namespace dynamicgraph {
 	try {
 	  signal = &(entity->getSignal(std::string(name)));
 	} catch(const std::exception& exc) {
-	  PyErr_SetString(error, exc.what());
+	  PyErr_SetString(dgpyError, exc.what());
 	  return NULL;
 	}
 	// Return the pointer to the signal without destructor since the signal
@@ -164,7 +164,7 @@ namespace dynamicgraph {
 	  }
 	  return result;
 	} catch(const std::exception& exc) {
-	  PyErr_SetString(error, exc.what());
+	  PyErr_SetString(dgpyError, exc.what());
 	  return NULL;
 	}
 	return NULL;

src/signal-base-py.cc

@@ -113,7 +113,7 @@ namespace dynamicgraph {
 	try {
 	  obj->display(oss);
 	} catch (const std::exception& exc) {
-	  PyErr_SetString(error, exc.what());
+	  PyErr_SetString(dgpyError, exc.what());
 	  return NULL;
 	}
 	return Py_BuildValue("s", oss.str().c_str());
@@ -136,7 +136,7 @@ namespace dynamicgraph {
 	try {
 	  obj->displayDependencies(oss,time);
 	} catch (const std::exception& exc) {
-	  PyErr_SetString(error, exc.what());
+	  PyErr_SetString(dgpyError, exc.what());
 	  return NULL;
 	}
 	return Py_BuildValue("s", oss.str().c_str());