message: Pass 1 and py fixes
diff: @@ -77,6 +77,7 @@ enum Version {
  // An AttributeProto MUST contain the name field, and *only one* of the
  // following content fields, effectively enforcing a C/C++ union equivalent.
  +message AttributeProto {
  enum AttributeType {
  FLOAT = 0;
  INT = 1;
  @@ -91,7 +92,6 @@ enum AttributeType {
  GRAPHS = 9;
  }
  -message AttributeProto {
  // The name field MUST be present for this version of the IR.
  optional string name = 1; // namespace Attribute
  