Contradictory error messages in Python 3.4 - standard library issue!

From	Harrison Chudleigh <harrison.chudleigh1@education.nsw.gov.au>
Newsgroups	comp.lang.python
Subject	Contradictory error messages in Python 3.4 - standard library issue!
Date	2016-06-17 08:25 +1000
Message-ID	<mailman.96.1466116456.2288.python-list@python.org> (permalink)
References	<CACMigy3DREGfAe=3SDacYkaPX90=wqp1N5T93DCzHpwqD54Y=g@mail.gmail.com>

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While working on a program, I ran into an error with the usage of the
module tokenize. The following message was displayed.
 File
"/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/tokenize.py",
line 467, in tokenize
    encoding, consumed = detect_encoding(readline)
  File
"/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/tokenize.py",
line 409, in detect_encoding
    if first.startswith(BOM_UTF8):
TypeError: startswith first arg must be str or a tuple of str, not bytes
Undaunted, I changed the error on line 409. The line then read:

if first.startswith(BOM_UTF8):
*******************************************************************************
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Contradictory error messages in Python 3.4 - standard library issue! Harrison Chudleigh <harrison.chudleigh1@education.nsw.gov.au> - 2016-06-17 08:25 +1000
  Re: Contradictory error messages in Python 3.4 - standard library issue! Steven D'Aprano <steve@pearwood.info> - 2016-06-17 11:58 +1000

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