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annotate venv/lib/python2.7/site-packages/docutils/_compat.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # $Id: _compat.py 7486 2012-07-11 12:25:14Z milde $
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2 # Author: Georg Brandl <georg@python.org>
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3 # Copyright: This module has been placed in the public domain.
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4
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5 """
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6 Python 2/3 compatibility definitions.
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7
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8 This module currently provides the following helper symbols:
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9
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10 * bytes (name of byte string type; str in 2.x, bytes in 3.x)
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11 * b (function converting a string literal to an ASCII byte string;
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12 can be also used to convert a Unicode string into a byte string)
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13 * u_prefix (unicode repr prefix: 'u' in 2.x, '' in 3.x)
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14 (Required in docutils/test/test_publisher.py)
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15 * BytesIO (a StringIO class that works with bytestrings)
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16 """
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17
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18 import sys
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19
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20 if sys.version_info < (3,0):
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21 b = bytes = str
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22 u_prefix = 'u'
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23 from StringIO import StringIO as BytesIO
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24 else:
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25 import builtins
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26 bytes = builtins.bytes
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27 u_prefix = ''
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28 def b(s):
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29 if isinstance(s, str):
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30 return s.encode('latin1')
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31 elif isinstance(s, bytes):
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32 return s
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33 else:
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34 raise TypeError("Invalid argument %r for b()" % (s,))
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35 # using this hack since 2to3 "fixes" the relative import
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36 # when using ``from io import BytesIO``
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37 BytesIO = __import__('io').BytesIO
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38
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39 if sys.version_info < (2,5):
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40 import __builtin__
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41
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42 def __import__(name, globals={}, locals={}, fromlist=[], level=-1):
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43 """Compatibility definition for Python 2.4.
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44
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45 Silently ignore the `level` argument missing in Python < 2.5.
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46 """
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47 # we need the level arg because the default changed in Python 3.3
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48 return __builtin__.__import__(name, globals, locals, fromlist)