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bpo-43914: Highlight invalid ranges in SyntaxErrors (#25525)

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To improve the user experience understanding what part of the error messages associated with SyntaxErrors is wrong, we can highlight the whole error range and not only place the caret at the first character. In this way:

>>> foo(x, z for z in range(10), t, w)
  File "<stdin>", line 1
    foo(x, z for z in range(10), t, w)
           ^
SyntaxError: Generator expression must be parenthesized

becomes

>>> foo(x, z for z in range(10), t, w)
  File "<stdin>", line 1
    foo(x, z for z in range(10), t, w)
           ^^^^^^^^^^^^^^^^^^^^
SyntaxError: Generator expression must be parenthesized
This commit is contained in:
Pablo Galindo 2021-04-23 14:27:05 +01:00 • committed by GitHub
parent 91b69b77cf
commit a77aac4fca
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17 changed files with 1687 additions and 1219 deletions
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2
Lib/test/test_syntax.py
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@ -1212,7 +1212,7 @@ class SyntaxTestCase(unittest.TestCase):
self._check_error(
"print(end1 + end2 = ' ')",
'expression cannot contain assignment, perhaps you meant "=="?',
offset=19
offset=7
)
def test_curly_brace_after_primary_raises_immediately(self):