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"""
Python 3 compatibility tools.
"""
__all__ = ['bytes', 'asbytes', 'isfile']
import sys
if sys.version_info[0] >= 3:
import io
bytes = bytes
def asbytes(s):
if isinstance(s, bytes):
return s
return s.encode('iso-8859-1')
def isfile(f):
return isinstance(f, io.IOBase)
else:
bytes = str
asbytes = str
def isfile(f):
return isinstance(f, file)
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