[New-bugs-announce] [issue47156] IDLE: make use of extended SyntaxError info.

[Terry J. Reedy]

New submission from Terry J. Reedy <tjreedy at udel.edu>:

In 3.10 and 3.11:

>>> while s := input.read(MAXBINSIZE):
...     while len(s) < MAXBINSIZE and ns := input.read(MAXBINSIZE-len(s)):
  File "<stdin>", line 2
    while len(s) < MAXBINSIZE and ns := input.read(MAXBINSIZE-len(s)):
          ^^^^^^^^^^^^^^^^^^^^^^^^^^
SyntaxError: cannot use assignment expressions with expression

IDLE only colors the 'l' of 'len'; add extended marking.

Some other errors gained extended location in 3.11 (only, I believe).  Adding colors may require monkeypatching method or subclassing class in traceback.py.  May have commented on issue or PR.

Related: Put SyntaxError in box.  (Anyone really want log of error?)

----------
assignee: terry.reedy
components: IDLE
messages: 416302
nosy: terry.reedy
priority: normal
severity: normal
stage: test needed
status: open
title: IDLE: make use of extended SyntaxError info.
versions: Python 3.10, Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue47156>
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