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JelleZijlstra / typeshed_client

Retrieve information from typeshed and other typing stubs

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Switch to using ast for parsing

JelleZijlstra opened this issue · comments

commented

typed-ast is being phased out (python/typed_ast#170). As far as I can tell, stubs as used in typeshed should always be parsable with Python 3.6 and higher, because 3.7 introduced no new features relevant to stubs and 3.8 (which brought positional-only param syntax) was never ported to typed-ast. Therefore, we should be able to get away with just using ast.parse.

This will break the major consumer of typeshed_client (pyanalyze), because it does a lot of isinstance checks on ast3 objects. Therefore, my tentative plan is:

  • Make pyanalyze pin typeshed-client to <2 and make a release.
  • Switch to ast in typeshed-client and release typeshed-client 2.0.
  • Switch pyanalyze to the new types and require typeshed-client 2.0.