asjadsyed opened a new pull request, #3111:
URL: https://github.com/apache/thrift/pull/3111
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When using Thrift with Tornado 6+, we get an error `builtins.AttributeError:
module 'tornado.gen' has no attribute 'engine'`
This is because Tornado deprecated `@gen.engine` by Tornado 5.1 and removed
it by Tornado 6, telling users to replace it with `@gen.coroutine` or `async
def`. Between those choices, using `@gen.coroutine` is simpler to migrate to.
This PR replaces `@gen.engine` with `@gen.coroutine` in the py:tornado code
generation. This is also the only match for "gen.engine" in the repo.
I also left a lengthier comment on the
[THRIFT-5024](https://issues.apache.org/jira/browse/THRIFT-5024) ticket.
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- Someone else did
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- There shouldn't be any breakage; this is the highlighted migration path in
the docs. Even for users on older versions of Tornado, the docs always say the
two methods are similar.
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