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`ast.parse` and `compile` support a `feature_version` parameter that tells the parser to parse the input string, as if it were written in an older Python version. The `feature_version` is propagated to the tokenizer, which uses it to handle the three different stages of support for `async` and `await`. Additionally, it disallows the following at parser level: - The '@' operator in < 3.5 - Async functions in < 3.5 - Async comprehensions in < 3.6 - Underscores in numeric literals in < 3.6 - Await expression in < 3.5 - Variable annotations in < 3.6 - Async for-loops in < 3.5 - Async with-statements in < 3.5 - F-strings in < 3.6 Closes we-like-parsers/cpython#124. |
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| .. | ||
| pegen | ||
| pgen | ||
| acceler.c | ||
| asdl.py | ||
| asdl_c.py | ||
| grammar1.c | ||
| listnode.c | ||
| myreadline.c | ||
| node.c | ||
| parser.c | ||
| parser.h | ||
| parsetok.c | ||
| Python.asdl | ||
| token.c | ||
| tokenizer.c | ||
| tokenizer.h | ||