diff options
Diffstat (limited to 'Lib/concurrent/futures/_base.py')
| -rw-r--r-- | Lib/concurrent/futures/_base.py | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/Lib/concurrent/futures/_base.py b/Lib/concurrent/futures/_base.py index 8b9dc50713..ea16eef841 100644 --- a/Lib/concurrent/futures/_base.py +++ b/Lib/concurrent/futures/_base.py @@ -544,7 +544,7 @@ class Future(object): class Executor(object): """This is an abstract base class for concrete asynchronous executors.""" - def submit(self, fn, *args, **kwargs): + def submit(*args, **kwargs): """Submits a callable to be executed with the given arguments. Schedules the callable to be executed as fn(*args, **kwargs) and returns @@ -553,6 +553,19 @@ class Executor(object): Returns: A Future representing the given call. """ + if len(args) >= 2: + pass + elif not args: + raise TypeError("descriptor 'submit' of 'Executor' object " + "needs an argument") + elif 'fn' in kwargs: + import warnings + warnings.warn("Passing 'fn' as keyword argument is deprecated", + DeprecationWarning, stacklevel=2) + else: + raise TypeError('submit expected at least 1 positional argument, ' + 'got %d' % (len(args)-1)) + raise NotImplementedError() def map(self, fn, *iterables, timeout=None, chunksize=1): |