drop python3 dependency (VPP-1010)

Change-Id: I99c2c1d0d5b96f33efdb58dd3a2897a752e65349
Signed-off-by: Klement Sekera <ksekera@cisco.com>

3 files changed, 25 insertions, 22 deletions

diff --git a/src/vpp-api/vapi/vapi_c_gen.py b/src/vpp-api/vapi/vapi_c_gen.py
index ef6e2663cf4..d7a7272adff 100755
--- a/src/vpp-api/vapi/vapi_c_gen.py
+++ b/src/vpp-api/vapi/vapi_c_gen.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2
 
 import argparse
 import os
@@ -15,7 +15,8 @@ class CField(Field):
             field_type,
             array_len=None,
             nelem_field=None):
-        super().__init__(field_name, field_type, array_len, nelem_field)
+        super(CField, self).__init__(
+            field_name, field_type, array_len, nelem_field)
 
     def get_c_def(self):
         if self.len is not None:
@@ -67,7 +68,7 @@ class CField(Field):
 
 class CStruct(Struct):
     def __init__(self, name, fields):
-        super().__init__(name, fields)
+        super(CStruct, self).__init__(name, fields)
 
     def get_c_def(self):
         return "\n".join([
@@ -92,7 +93,7 @@ class CSimpleType (SimpleType):
     }
 
     def __init__(self, name):
-        super().__init__(name)
+        super(CSimpleType, self).__init__(name)
 
     def get_c_name(self):
         return self.name
@@ -122,7 +123,7 @@ class CSimpleType (SimpleType):
 
 class CStructType (StructType, CStruct):
     def __init__(self, definition, typedict, field_class):
-        super().__init__(definition, typedict, field_class)
+        super(CStructType, self).__init__(definition, typedict, field_class)
 
     def get_c_name(self):
         return "vapi_type_%s" % self.name
@@ -173,8 +174,9 @@ class CStructType (StructType, CStruct):
 class CMessage (Message):
     def __init__(self, logger, definition, typedict,
                  struct_type_class, simple_type_class, field_class):
-        super().__init__(logger, definition, typedict, struct_type_class,
-                         simple_type_class, field_class)
+        super(CMessage, self).__init__(logger, definition, typedict,
+                                       struct_type_class, simple_type_class,
+                                       field_class)
         self.payload_members = [
             "  %s" % p.get_c_def()
             for p in self.fields
diff --git a/src/vpp-api/vapi/vapi_cpp_gen.py b/src/vpp-api/vapi/vapi_cpp_gen.py
index 6e9f5d3f46f..3010f3e1919 100755
--- a/src/vpp-api/vapi/vapi_cpp_gen.py
+++ b/src/vpp-api/vapi/vapi_cpp_gen.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2
 
 import argparse
 import os
@@ -16,30 +16,31 @@ class CppField(CField):
             field_type,
             array_len=None,
             nelem_field=None):
-        super().__init__(field_name, field_type, array_len, nelem_field)
+        super(CppField, self).__init__(
+            field_name, field_type, array_len, nelem_field)
 
 
 class CppStruct(CStruct):
     def __init__(self, name, fields):
-        super().__init__(name, fields)
+        super(CppStruct, self).__init__(name, fields)
 
 
 class CppSimpleType (CSimpleType):
-
     def __init__(self, name):
-        super().__init__(name)
+        super(CppSimpleType, self).__init__(name)
 
 
 class CppStructType (CStructType, CppStruct):
     def __init__(self, definition, typedict, field_class):
-        super().__init__(definition, typedict, field_class)
+        super(CppStructType, self).__init__(definition, typedict, field_class)
 
 
 class CppMessage (CMessage):
     def __init__(self, logger, definition, typedict,
                  struct_type_class, simple_type_class, field_class):
-        super().__init__(logger, definition, typedict, struct_type_class,
-                         simple_type_class, field_class)
+        super(CppMessage, self).__init__(
+            logger, definition, typedict, struct_type_class,
+            simple_type_class, field_class)
 
     def get_swap_to_be_template_instantiation(self):
         return "\n".join([
diff --git a/src/vpp-api/vapi/vapi_json_parser.py b/src/vpp-api/vapi/vapi_json_parser.py
index 1e17c7a5b5a..4e62720d37e 100644
--- a/src/vpp-api/vapi/vapi_json_parser.py
+++ b/src/vpp-api/vapi/vapi_json_parser.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2
 
 import json
 
@@ -22,7 +22,7 @@ def remove_magic(what):
     return what
 
 
-class Field:
+class Field(object):
 
     def __init__(
             self,
@@ -46,7 +46,7 @@ class Field:
                     (self.name, self.type, self.nelem_field))
 
 
-class Type:
+class Type(object):
     def __init__(self, name):
         self.name = name
 
@@ -54,7 +54,7 @@ class Type:
 class SimpleType (Type):
 
     def __init__(self, name):
-        super().__init__(name)
+        super(SimpleType, self).__init__(name)
 
     def __str__(self):
         return self.name
@@ -78,7 +78,7 @@ def get_msg_header_defs(struct_type_class, field_class, typedict):
     ]
 
 
-class Struct:
+class Struct(object):
 
     def __init__(self, name, fields):
         self.name = name
@@ -86,7 +86,7 @@ class Struct:
         self.field_names = [n.name for n in self.fields]
 
 
-class Message:
+class Message(object):
 
     def __init__(self, logger, definition, typedict,
                  struct_type_class, simple_type_class, field_class):
@@ -217,7 +217,7 @@ class StructType (Type, Struct):
         return True
 
 
-class JsonParser:
+class JsonParser(object):
     def __init__(self, logger, files, simple_type_class=SimpleType,
                  struct_type_class=StructType, field_class=Field,
                  message_class=Message):