Optionally generate type prefixes and suffixes for python code (#7857)

* optionally generate type prefixes and suffixes for python code

* fix codegen error when qualified name is empty

* generated code updated

python/flatbuffers/reflection/Field.py

@@ -155,54 +155,104 @@ class Field(object):
             return self._tab.Get(flatbuffers.number_types.Uint16Flags, o + self._tab.Pos)
         return 0
 
-def FieldStart(builder): builder.StartObject(13)
+def FieldStart(builder):
+    return builder.StartObject(13)
+
 def Start(builder):
     return FieldStart(builder)
-def FieldAddName(builder, name): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
+def FieldAddName(builder, name):
+    return builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(name), 0)
+
 def AddName(builder, name):
     return FieldAddName(builder, name)
-def FieldAddType(builder, type): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(type), 0)
+
+def FieldAddType(builder, type):
+    return builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(type), 0)
+
 def AddType(builder, type):
     return FieldAddType(builder, type)
-def FieldAddId(builder, id): builder.PrependUint16Slot(2, id, 0)
+
+def FieldAddId(builder, id):
+    return builder.PrependUint16Slot(2, id, 0)
+
 def AddId(builder, id):
     return FieldAddId(builder, id)
-def FieldAddOffset(builder, offset): builder.PrependUint16Slot(3, offset, 0)
+
+def FieldAddOffset(builder, offset):
+    return builder.PrependUint16Slot(3, offset, 0)
+
 def AddOffset(builder, offset):
     return FieldAddOffset(builder, offset)
-def FieldAddDefaultInteger(builder, defaultInteger): builder.PrependInt64Slot(4, defaultInteger, 0)
+
+def FieldAddDefaultInteger(builder, defaultInteger):
+    return builder.PrependInt64Slot(4, defaultInteger, 0)
+
 def AddDefaultInteger(builder, defaultInteger):
     return FieldAddDefaultInteger(builder, defaultInteger)
-def FieldAddDefaultReal(builder, defaultReal): builder.PrependFloat64Slot(5, defaultReal, 0.0)
+
+def FieldAddDefaultReal(builder, defaultReal):
+    return builder.PrependFloat64Slot(5, defaultReal, 0.0)
+
 def AddDefaultReal(builder, defaultReal):
     return FieldAddDefaultReal(builder, defaultReal)
-def FieldAddDeprecated(builder, deprecated): builder.PrependBoolSlot(6, deprecated, 0)
+
+def FieldAddDeprecated(builder, deprecated):
+    return builder.PrependBoolSlot(6, deprecated, 0)
+
 def AddDeprecated(builder, deprecated):
     return FieldAddDeprecated(builder, deprecated)
-def FieldAddRequired(builder, required): builder.PrependBoolSlot(7, required, 0)
+
+def FieldAddRequired(builder, required):
+    return builder.PrependBoolSlot(7, required, 0)
+
 def AddRequired(builder, required):
     return FieldAddRequired(builder, required)
-def FieldAddKey(builder, key): builder.PrependBoolSlot(8, key, 0)
+
+def FieldAddKey(builder, key):
+    return builder.PrependBoolSlot(8, key, 0)
+
 def AddKey(builder, key):
     return FieldAddKey(builder, key)
-def FieldAddAttributes(builder, attributes): builder.PrependUOffsetTRelativeSlot(9, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
+def FieldAddAttributes(builder, attributes):
+    return builder.PrependUOffsetTRelativeSlot(9, flatbuffers.number_types.UOffsetTFlags.py_type(attributes), 0)
+
 def AddAttributes(builder, attributes):
     return FieldAddAttributes(builder, attributes)
-def FieldStartAttributesVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+
+def FieldStartAttributesVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
 def StartAttributesVector(builder, numElems):
     return FieldStartAttributesVector(builder, numElems)
-def FieldAddDocumentation(builder, documentation): builder.PrependUOffsetTRelativeSlot(10, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
+def FieldAddDocumentation(builder, documentation):
+    return builder.PrependUOffsetTRelativeSlot(10, flatbuffers.number_types.UOffsetTFlags.py_type(documentation), 0)
+
 def AddDocumentation(builder, documentation):
     return FieldAddDocumentation(builder, documentation)
-def FieldStartDocumentationVector(builder, numElems): return builder.StartVector(4, numElems, 4)
+
+def FieldStartDocumentationVector(builder, numElems):
+    return builder.StartVector(4, numElems, 4)
+
 def StartDocumentationVector(builder, numElems):
     return FieldStartDocumentationVector(builder, numElems)
-def FieldAddOptional(builder, optional): builder.PrependBoolSlot(11, optional, 0)
+
+def FieldAddOptional(builder, optional):
+    return builder.PrependBoolSlot(11, optional, 0)
+
 def AddOptional(builder, optional):
     return FieldAddOptional(builder, optional)
-def FieldAddPadding(builder, padding): builder.PrependUint16Slot(12, padding, 0)
+
+def FieldAddPadding(builder, padding):
+    return builder.PrependUint16Slot(12, padding, 0)
+
 def AddPadding(builder, padding):
     return FieldAddPadding(builder, padding)
-def FieldEnd(builder): return builder.EndObject()
+
+def FieldEnd(builder):
+    return builder.EndObject()
+
 def End(builder):
-    return FieldEnd(builder)
+    return FieldEnd(builder)