Use an exception class with raising an exception

Author: Damian Zaremba

src/openbmp/api/parsed/message/Base.py

@@ -59,7 +59,7 @@ def parse(self, version, data):
         :return:  True if error, False if no errors
         """
         if not data.strip(): # If "data" is not string, throws error.
-            raise "Invalid data!", data
+            raise ValueError("Invalid data!", data)
 
         self.spec_version = float(version)
 

src/openbmp/api/parsed/message/Message.py

@@ -23,7 +23,7 @@ def __init__(self, data):
         """
 
         if not data.strip(): # If "data" is not string, throws error.
-            raise "Invalid data!", data
+            raise ValueError("Invalid data!", data)
 
         self.version = float()
         self.type = str()
@@ -101,4 +101,4 @@ def getContentPos(self):
         return self.content_pos
 
     def getContent(self):
-        return self.content
+        return self.content