tree d7890d76942f60cb48f128a88e7292932553197d
parent 35f504780e17d24e8d19617becf5bd4a8fe028d3
author adonovan <adonovan@google.com> 1601581150 -0700
committer Copybara-Service <copybara-worker@google.com> 1601581219 -0700

starlark: improve error message for "for k,v in dict(...)"

Was: type 'string' is not iterable
Now: got 'string' in sequence assignment (want 2-element sequence)

Also:
- add test (testdata/loop.sky)
- migrate related tests from Java to loop.sky
- naming tweaks
PiperOrigin-RevId: 334874972