Anders Kaseorg 91a86c24f5 python: Replace None defaults with empty collections where appropriate. ...

Use read-only types (List ↦ Sequence, Dict ↦ Mapping, Set ↦
AbstractSet) to guard against accidental mutation of the default
value.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

2020-06-13 15:31:27 -07:00

2.6 KiB

Raw Blame History

View Raw