diff options
Diffstat (limited to 'coverage/control.py')
| -rw-r--r-- | coverage/control.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/coverage/control.py b/coverage/control.py index 00836b3c..99319c05 100644 --- a/coverage/control.py +++ b/coverage/control.py @@ -448,7 +448,7 @@ class Coverage: def _init_for_start(self): """Initialization for start()""" # Construct the collector. - concurrency = self.config.concurrency or () + concurrency = self.config.concurrency or [] if "multiprocessing" in concurrency: if not patch_multiprocessing: raise ConfigError( # pragma: only jython |