forked from statsmodels/statsmodels
/
py3k.py
71 lines (64 loc) · 1.83 KB
/
py3k.py
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"""
Python 3 compatibility tools.
"""
__all__ = ['bytes', 'asbytes', 'isfileobj', 'getexception', 'strchar',
'unicode', 'asunicode', 'asbytes_nested', 'asunicode_nested',
'asstr', 'open_latin1']
import sys
if sys.version_info[0] >= 3:
import io
string_types = basestring
bytes = bytes
unicode = str
asunicode = str
def asbytes(s):
if isinstance(s, bytes):
return s
return s.encode('latin1')
def asstr(s):
if isinstance(s, str):
return s
return s.decode('latin1')
def asstr2(s): #added JP, not in numpy version
if isinstance(s, str):
return s
elif isinstance(s, bytes):
return s.decode('latin1')
else:
return str(s)
def isfileobj(f):
return isinstance(f, io.FileIO)
def open_latin1(filename, mode='r'):
return open(filename, mode=mode, encoding='iso-8859-1')
strchar = 'U'
from io import BytesIO, StringIO #statsmodels
else:
string_types = str
bytes = str
unicode = unicode
asbytes = str
asstr = str
asstr2 = str
strchar = 'S'
def isfileobj(f):
return isinstance(f, file)
def asunicode(s):
if isinstance(s, unicode):
return s
return s.decode('ascii')
def open_latin1(filename, mode='r'):
return open(filename, mode=mode)
from StringIO import StringIO
BytesIO = StringIO
def getexception():
return sys.exc_info()[1]
def asbytes_nested(x):
if hasattr(x, '__iter__') and not isinstance(x, (bytes, unicode)):
return [asbytes_nested(y) for y in x]
else:
return asbytes(x)
def asunicode_nested(x):
if hasattr(x, '__iter__') and not isinstance(x, (bytes, unicode)):
return [asunicode_nested(y) for y in x]
else:
return asunicode(x)