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bpo-40334: Rename PyConfig.use_peg to _use_peg_parser (GH-19670)

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* Rename PyConfig.use_peg to _use_peg_parser
* Document PyConfig._use_peg_parser and mark it a deprecated
* Mark -X oldparser option and PYTHONOLDPARSER env var as deprecated
  in the documentation.
* Add use_old_parser() and skip_if_new_parser() to test.support
* Remove sys.flags.use_peg: use_old_parser() uses
  _testinternalcapi.get_configs() instead.
* Enhance test_embed tests
* subprocess._args_from_interpreter_flags() copies -X oldparser
This commit is contained in:
Victor Stinner 2020-04-23 03:03:24 +02:00 • committed by GitHub
parent a25f3c4c8f
commit 1def7754b7
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GPG key ID: 4AEE18F83AFDEB23
26 changed files with 83 additions and 54 deletions
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8
Lib/test/test_positional_only_arg.py
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@ -5,7 +5,7 @@ import pickle
import unittest
import sys
from test.support import check_syntax_error
from test.support import check_syntax_error, use_old_parser
def global_pos_only_f(a, b, /):
@ -24,7 +24,7 @@ class PositionalOnlyTestCase(unittest.TestCase):
compile(codestr + "\n", "<test>", "single")
def test_invalid_syntax_errors(self):
if not sys.flags.use_peg:
if use_old_parser():
check_syntax_error(self, "def f(a, b = 5, /, c): pass", "non-default argument follows default argument")
check_syntax_error(self, "def f(a = 5, b, /, c): pass", "non-default argument follows default argument")
check_syntax_error(self, "def f(a = 5, b=1, /, c, *, d=2): pass", "non-default argument follows default argument")
@ -47,7 +47,7 @@ class PositionalOnlyTestCase(unittest.TestCase):
check_syntax_error(self, "def f(a, *, c, /, d, e): pass")
def test_invalid_syntax_errors_async(self):
if not sys.flags.use_peg:
if use_old_parser():
check_syntax_error(self, "async def f(a, b = 5, /, c): pass", "non-default argument follows default argument")
check_syntax_error(self, "async def f(a = 5, b, /, c): pass", "non-default argument follows default argument")
check_syntax_error(self, "async def f(a = 5, b=1, /, c, d=2): pass", "non-default argument follows default argument")
@ -236,7 +236,7 @@ class PositionalOnlyTestCase(unittest.TestCase):
self.assertEqual(x(1, 2), 3)
def test_invalid_syntax_lambda(self):
if not sys.flags.use_peg:
if use_old_parser():
check_syntax_error(self, "lambda a, b = 5, /, c: None", "non-default argument follows default argument")
check_syntax_error(self, "lambda a = 5, b, /, c: None", "non-default argument follows default argument")
check_syntax_error(self, "lambda a = 5, b, /: None", "non-default argument follows default argument")