[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3399: Evaluate adding mypy checks to code checks

[Tahoe-LAFS]

#3399: Evaluate adding mypy checks to code checks
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 Reporter:  jaraco       |          Owner:  jaraco
     Type:  enhancement  |         Status:  new
 Priority:  normal       |      Milestone:  Support Python 3
Component:  unknown      |        Version:  n/a
 Keywords:               |  Launchpad Bug:
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 The mypy project (and type checking more generally) promises to improve
 code quality and catch type errors statically. Recent versions of mypy
 have fairly robust support for inferring types for many functions. The
 Python 3 porting team would like to evaluate the viability of employing
 mypy checks during the code check phase to catch such errors early and
 perhaps elucidate issues with binary vs. text during the porting effort.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3399>
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