diff options
Diffstat (limited to 'python/google/protobuf/internal/api_implementation.py')
| -rwxr-xr-x | python/google/protobuf/internal/api_implementation.py | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/python/google/protobuf/internal/api_implementation.py b/python/google/protobuf/internal/api_implementation.py index 553fcdb6..ab9e7812 100755 --- a/python/google/protobuf/internal/api_implementation.py +++ b/python/google/protobuf/internal/api_implementation.py @@ -66,10 +66,13 @@ if _api_version < 0: # Still unspecified? from google.protobuf.internal import use_pure_python del use_pure_python # Avoids a pylint error and namespace pollution. except ImportError: - if _proto_extension_modules_exist_in_build: - if sys.version_info[0] >= 3: # Python 3 defaults to C++ impl v2. - _api_version = 2 - # TODO(b/17427486): Make Python 2 default to C++ impl v2. + # TODO(b/74017912): It's unsafe to enable :use_fast_cpp_protos by default; + # it can cause data loss if you have any Python-only extensions to any + # message passed back and forth with C++ code. + # + # TODO(b/17427486): Once that bug is fixed, we want to make both Python 2 + # and Python 3 default to `_api_version = 2` (C++ implementation V2). + pass _default_implementation_type = ( 'python' if _api_version <= 0 else 'cpp') |