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[py23] define BytesIO, StringIO and 'UnicodeIO' to disambiguate bytes vs unicode in-memory streams

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This commit is contained in:
Cosimo Lupo 2015-08-07 15:44:58 +01:00
parent 852e4e6593
commit 2e058808fe
1 changed files with 9 additions and 1 deletions
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10
Lib/fontTools/misc/py23.py
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@ -90,10 +90,18 @@ except NameError:
def byteord(c): def byteord(c):
return c if isinstance(c, int) else ord(c) return c if isinstance(c, int) else ord(c)
# the 'io' module provides the same I/O interface on both 2 and 3.
# here we define an alias of io.StringIO to disambiguate it eternally...
from io import BytesIO
from io import StringIO as UnicodeIO
try: try:
# in python 2, by 'StringIO' we still mean a stream of *byte* strings
from StringIO import StringIO from StringIO import StringIO
except ImportError: except ImportError:
from io import BytesIO as StringIO # in Python 3, we mean instead a stream of *unicode* strings
StringIO = UnicodeIO
def strjoin(iterable, joiner=''): def strjoin(iterable, joiner=''):
return tostr(joiner).join(iterable) return tostr(joiner).join(iterable)