Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:
In the particular case of pyparsing there was a bug in the docstring.
def sub(self, repl):
"""
Return Regex with an attached parse action to transform the parsed
result as if called using `re.sub(expr, repl, string)
<https://docs.python.org/3/library/re.html#re.sub>`_.
Example::
make_html = Regex(r"(\w+):(.*?):").sub(r"<\1>\2</\1>")
print(make_html.transformString("h1:main title:"))
# prints "<h1>main title</h1>"
"""
\1 and \2 were interpreted as control characters U+0001 and U+0002, so the user
could see
make_html = Regex(r"(\w+):(.*?):").sub(r"<^A>^B</^A>")
or
make_html = Regex(r"(\w+):(.*?):").sub(r"<☺>☻</☺>")
or
make_html = Regex(r"(\w+):(.*?):").sub(r"<></>")
depending on the output device.
So this examples proves the usefulness of the new warning.
----------
_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32912>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
