1import sys
2
3PY3 = sys.version_info[0] >= 3
4
5if PY3:
6    unicode = str
7    basestring = str
8    xrange = range
9    from io import StringIO
10    from io import BytesIO
11else:
12    unicode = unicode
13    basestring = basestring
14    xrange = xrange
15    from StringIO import StringIO
16    from StringIO import StringIO as BytesIO
17