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import sys
import array
PY2 = sys.version_info[0] == 2
_identity = lambda x: x
if not PY2:
text_type = str
string_types = (str,)
integer_types = (int, )
unichr = chr
text_to_native = lambda s, enc: s
iterkeys = lambda d: iter(d.keys())
itervalues = lambda d: iter(d.values())
iteritems = lambda d: iter(d.items())
from io import StringIO, BytesIO
import pickle
izip = zip
imap = map
range_type = range
cmp = lambda a, b: (a > b) - (a < b)
array_tobytes = array.array.tobytes
else:
text_type = unicode
string_types = (str, unicode)
integer_types = (int, long)
text_to_native = lambda s, enc: s.encode(enc)
unichr = unichr
iterkeys = lambda d: d.iterkeys()
itervalues = lambda d: d.itervalues()
iteritems = lambda d: d.iteritems()
from cStringIO import StringIO as BytesIO
from StringIO import StringIO
import cPickle as pickle
from itertools import izip, imap
range_type = xrange
cmp = cmp
array_tobytes = array.array.tostring
number_types = integer_types + (float,)
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