New submission from Steve Ward:
string.printable includes all whitespace characters. However, the only
whitespace character that is printable is the space (0x20).
By definition, the only ASCII characters considered printable are:
alphanumeric characters
punctuation characters
the space character (not all whitespace characters)
Source:
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html#tag_07_03
7.2 POSIX Locale
Conforming systems shall provide a POSIX locale, also known as the C locale.
7.3.1 LC_CTYPE
space
Define characters to be classified as white-space characters.
In the POSIX locale, exactly <space>, <form-feed>, <newline>,
<carriage-return>, <tab>, and <vertical-tab> shall be included.
cntrl
Define characters to be classified as control characters.
In the POSIX locale, no characters in classes alpha or print shall be
included.
graph
Define characters to be classified as printable characters, not including
the <space>.
In the POSIX locale, all characters in classes alpha, digit, and punct
shall be included; no characters in class cntrl shall be included.
print
Define characters to be classified as printable characters, including the
<space>.
In the POSIX locale, all characters in class graph shall be included; no
characters in class cntrl shall be included.
LC_CTYPE Category in the POSIX Locale
# "print" is by default "alnum", "punct", and the <space>
----------
components: Library (Lib)
files: bug-string-ascii.py
messages: 232343
nosy: planet36
priority: normal
severity: normal
status: open
title: string.printable.isprintable() returns False
type: behavior
versions: Python 3.4
Added file: http://bugs.python.org/file37391/bug-string-ascii.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue23017>
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