Alex Murray (alexmurray) Publisher
  • Alex Murray (alexmurray) Publisher
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Ubuntu 16.04 or later?

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Install using the command line

sudo snap install pyright --classic

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Channel Version Published

Static type checker for Python


Pyright is a fast type checker meant for large Python source bases. It can run in a “watch” mode and performs fast incremental updates when files are modified.


Pyright supports configuration files that provide granular control over settings. Different “execution environments” can be associated with subdirectories within a source base. Each environment can specify different module search paths, python language versions, and platform targets.

Type Checking Features:

  • PEP 484 type hints including generics
  • PEP 487 simpler customization of class creation
  • PEP 526 syntax for variable annotations
  • PEP 544 structural subtyping
  • PEP 561 distributing and packaging type information
  • PEP 563 postponed evaluation of annotations
  • PEP 585 type hinting generics in standard collections
  • PEP 586 literal types
  • PEP 589 typed dictionaries
  • PEP 591 final qualifier
  • PEP 593 flexible variable annotations
  • PEP 604 complementary syntax for unions
  • PEP 612 parameter specification variables
  • PEP 613 explicit type aliases
  • PEP 635 structural pattern matching
  • PEP 637 indexing with keyword arguments
  • PEP 646 variadic generics
  • PEP 647 user-defined type guards
  • PEP 655 required typed dictionary items
  • Type inference for function return values, instance variables, class variables, and globals
  • Type guards that understand conditional code flow constructs like if/else statements

Developer website

Contact Alex Murray

Details for pyright

Last updated
18 September 2021

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