An ANTLR4 grammar for Python 3 based on version 3.3.5 of The Python Language Reference.

For examples and unit tests, which consist of parsing all Python source files from Python 3's standard library, see this GitHub repository.

Note that this grammar contains embedded Java code that handles the insertion of INDENT and DEDENT tokens. The embedded code, located inside the NEWLINE lexer rule as well as the @lexer::members section is well documented, so people trying to port this grammar to another target should not have much difficulty.