New submission from Steve B <[email protected]>:
Here is an example involving the unicode character MIDDLE DOT · : The line
ab·cd = 7
is valid Python 3 code and is happily accepted by the CPython interpreter.
However, tokenize.py does not like it. It says that the middle-dot is an error
token. Here is an example you can run to see that:
import tokenize
from io import BytesIO
test = 'ab·cd = 7'.encode('utf-8')
x = tokenize.tokenize(BytesIO(test).readline)
for i in x: print(i)
For reference, the official definition of identifiers is:
https://docs.python.org/3.6/reference/lexical_analysis.html#identifiers
and details about MIDDLE DOT are at
https://www.unicode.org/Public/10.0.0/ucd/PropList.txt
MIDDLE DOT has the "Other_ID_Continue" property, so I think the interpreter is
behaving correctly (i.e. consistent with the documented spec), while
tokenize.py is wrong.
----------
components: Library (Lib), Unicode
messages: 313168
nosy: ezio.melotti, steve, vstinner
priority: normal
severity: normal
status: open
title: tokenize.py parses unicode identifiers incorrectly
type: behavior
versions: Python 3.6
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Python tracker <[email protected]>
<https://bugs.python.org/issue32987>
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