Edward Nuno 11ec2fd3fb
[mypy] Fix type annotations for trie.py (#5022)
* Fix type annotations for trie.py

* Add strict type annotations to trie.py

Annotate return type for all functions and type for "nodes"

* updating DIRECTORY.md

* Format trie.py

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
2021-10-23 01:21:41 +08:00
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