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- import sys
-
- PY2 = sys.version_info[0] == 2
-
-
- if PY2:
- def iteritems(d):
- return d.iteritems()
-
- def itervalues(d):
- return d.itervalues()
-
- xrange = xrange
-
- string_types = (unicode, bytes)
-
- def to_str(x, charset='utf8', errors='strict'):
- if x is None or isinstance(x, str):
- return x
-
- if isinstance(x, unicode):
- return x.encode(charset, errors)
-
- return str(x)
-
- else:
- def iteritems(d):
- return iter(d.items())
-
- def itervalues(d):
- return iter(d.values())
-
- xrange = range
-
- string_types = (str,)
-
- def to_str(x, charset='utf8', errors='strict'):
- if x is None or isinstance(x, str):
- return x
-
- if isinstance(x, bytes):
- return x.decode(charset, errors)
-
- return str(x)
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