New submission from Nick Coghlan:
Reporting by Rustom Mody on python-ideas, the SyntaxError caret is confusingly
mispositioned when an invalid Unicode codepoint appears as part of a larger
sequence of invalid codepoints and/or valid identifier characters:
>>> varname = “d“a”t”apoint
File "<stdin>", line 1
varname = “d“a”t”apoint
^
SyntaxError: invalid character in identifier
>>> varname = “d“a”t”apoint.evidence
File "<stdin>", line 1
varname = “d“a”t”apoint.evidence
^
SyntaxError: invalid character in identifier
>>> varname = “d“a”t”apoint[evidence]
File "<stdin>", line 1
varname = “d“a”t”apoint[evidence]
^
SyntaxError: invalid character in identifier
>>> varname = “d“a”t”apoint(evidence)
File "<stdin>", line 1
varname = “d“a”t”apoint(evidence)
^
SyntaxError: invalid character in identifier
If the invalid character is a non-identifiers ASCII character, the error
message loses the trailing "in identifier" phrase and points to the correct
place:
>>> varname = $d$a$t$apoint
File "<stdin>", line 1
varname = $d$a$t$apoint
^
SyntaxError: invalid syntax
>>> varname = d$a$t$apoint
File "<stdin>", line 1
varname = d$a$t$apoint
^
SyntaxError: invalid syntax
>>> varname = ^d$a$t$apoint
File "<stdin>", line 1
varname = ^d$a$t$apoint
^
SyntaxError: invalid syntax
>>> varname = !d$a$t$apoint
File "<stdin>", line 1
varname = !d$a$t$apoint
^
SyntaxError: invalid syntax
>>> varname = `d$a$t$apoint
File "<stdin>", line 1
varname = `d$a$t$apoint
^
SyntaxError: invalid syntax
----------
messages: 270914
nosy: ncoghlan
priority: normal
severity: normal
stage: needs patch
status: open
title: Mispositioned SyntaxError caret for unknown code points
type: behavior
versions: Python 3.5, Python 3.6
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue27582>
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