Python Language Reference

The Python Language Reference is the official, authoritative specification of the Python programming language.

Python 3.6.0 was released in December 2016. It introduced the following new language features:

  • formatted string literals
  • underscores in numeric literals
  • syntax for variable annotations
  • asynchronous generators
  • asynchronous comprehensions

See What’s New In Python 3.6 for more details.

Read the Authoritative Specification

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