From 8987c9d219f0efb438f5d707a63d0a0a0f72b3ef Mon Sep 17 00:00:00 2001 From: Yury Selivanov Date: Thu, 15 Sep 2016 12:50:23 -0400 Subject: Issue #26182: Raise DeprecationWarning for improper use of async/await keywords --- Python/ast.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'Python/ast.c') diff --git a/Python/ast.c b/Python/ast.c index 765d24e11b..deea579c0d 100644 --- a/Python/ast.c +++ b/Python/ast.c @@ -938,6 +938,26 @@ forbidden_name(struct compiling *c, identifier name, const node *n, ast_error(c, n, "assignment to keyword"); return 1; } + if (PyUnicode_CompareWithASCIIString(name, "async") == 0 || + PyUnicode_CompareWithASCIIString(name, "await") == 0) + { + PyObject *message = PyUnicode_FromString( + "'async' and 'await' will become reserved keywords" + " in Python 3.7"); + if (message == NULL) { + return 1; + } + if (PyErr_WarnExplicitObject( + PyExc_DeprecationWarning, + message, + c->c_filename, + LINENO(n), + NULL, + NULL) < 0) + { + return 1; + } + } if (full_checks) { const char * const *p; for (p = FORBIDDEN; *p; p++) { -- cgit v1.2.1