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When a syntax error happens, the exception that gets printed has an extra line with a caret that helps locate the error.
If the line also contains an identifier with non-ascii characters, then this caret is misaligned (too far on the right).
I've investigated briefly and it seems that the offset attribute on the SyntaxError has a wrong value:
 for varname in ['a', 'é', '蟒']: # 1, 2 and 3 bytes
 try:
 exec("%s$" % varname) # SyntaxError
 except SyntaxError as e:
 print(e.offset) # should be 2
The example above prints 2, 3, and 4 when it should be printing 2 every time.
It seems that the calculation of the offset takes into account the size in bytes instead of the size in characters.
I've tested and reproduced the issue on 3.2.2 and on a recent clone of the mercurial repository (dd5e98ddcd39).

See #2382.

Ezio, is there a reason you didn't close this as a duplicate?

I was just in a hurry and didn't have time to check if they were indeed the same issue. Looks like they are, so I'm closing this as duplicate.