diff options
Diffstat (limited to 'Lib/concurrent/futures/__init__.py')
| -rw-r--r-- | Lib/concurrent/futures/__init__.py | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/Lib/concurrent/futures/__init__.py b/Lib/concurrent/futures/__init__.py index 7ada7431c1a..e717222cf98 100644 --- a/Lib/concurrent/futures/__init__.py +++ b/Lib/concurrent/futures/__init__.py @@ -17,7 +17,7 @@ from concurrent.futures._base import (FIRST_COMPLETED, wait, as_completed) -__all__ = ( +__all__ = [ 'FIRST_COMPLETED', 'FIRST_EXCEPTION', 'ALL_COMPLETED', @@ -29,10 +29,18 @@ __all__ = ( 'Executor', 'wait', 'as_completed', - 'InterpreterPoolExecutor', 'ProcessPoolExecutor', 'ThreadPoolExecutor', -) +] + + +try: + import _interpreters +except ImportError: + _interpreters = None + +if _interpreters: + __all__.append('InterpreterPoolExecutor') def __dir__(): @@ -43,22 +51,15 @@ def __getattr__(name): global ProcessPoolExecutor, ThreadPoolExecutor, InterpreterPoolExecutor if name == 'ProcessPoolExecutor': - from .process import ProcessPoolExecutor as pe - ProcessPoolExecutor = pe - return pe + from .process import ProcessPoolExecutor + return ProcessPoolExecutor if name == 'ThreadPoolExecutor': - from .thread import ThreadPoolExecutor as te - ThreadPoolExecutor = te - return te + from .thread import ThreadPoolExecutor + return ThreadPoolExecutor - if name == 'InterpreterPoolExecutor': - try: - from .interpreter import InterpreterPoolExecutor as ie - except ModuleNotFoundError: - ie = InterpreterPoolExecutor = None - else: - InterpreterPoolExecutor = ie - return ie + if _interpreters and name == 'InterpreterPoolExecutor': + from .interpreter import InterpreterPoolExecutor + return InterpreterPoolExecutor raise AttributeError(f"module {__name__!r} has no attribute {name!r}") |