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Groups > comp.lang.python > #89707

Re: Rewriting to Python 3

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Cecil Westerhof <Cecil@decebal.nl> writes:

> On my system I have:
>     PARSER_RE_STR = '/(%s)=' % '|'.join(DN_LUT.keys() + DN_LUT.values())
> in:
>     /usr/lib/python3.4/site-packages/ndg/httpsclient/ssl_peer_verification.py

Are you in contact with the author of that third-party library? Why is
it in your Python 3.4 site-packages?

> In Python 3 that gives:
>     TypeError: unsupported operand type(s) for +: 'dict_keys' and 'dict_values'
>
> How should I rewrite this?

My attempt:

    PARSER_RE_STR = "/({keys}|{values})=".format(
            keys=DN_LUT.keys(), values=DN_LUT.values())

Explicit is better than implicit, especially in mini-languages like
string interpolation.

-- 
 \      “Often, the surest way to convey misinformation is to tell the |
  `\               strict truth.” —Mark Twain, _Following the Equator_ |
_o__)                                                                  |
Ben Finney

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Thread

Rewriting to Python 3 Cecil Westerhof <Cecil@decebal.nl> - 2015-05-01 09:22 +0200
  Re: Rewriting to Python 3 Ben Finney <ben+python@benfinney.id.au> - 2015-05-01 17:56 +1000
  Re: Rewriting to Python 3 Peter Otten <__peter__@web.de> - 2015-05-01 10:09 +0200
  Re: Rewriting to Python 3 Chris Angelico <rosuav@gmail.com> - 2015-05-01 18:13 +1000
  Re: Rewriting to Python 3 Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-01 09:10 +0100
  Re: Rewriting to Python 3 Cecil Westerhof <Cecil@decebal.nl> - 2015-05-01 16:41 +0200
    Re: Rewriting to Python 3 Cecil Westerhof <Cecil@decebal.nl> - 2015-05-01 16:52 +0200

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