fix use of isinstance
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@ -77,7 +77,7 @@ def strize(v):
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'''Flatten unicode strings to str encoded as UTF-8'''
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if isinstance(v, unicode):
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return v.encode('utf-8')
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if isinstance(v, [list, tuple]):
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if isinstance(v, (list, tuple)):
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return type(v)([strize(e) for e in v])
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if isinstance(v, dict):
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return dict((strize(k), strize(e)) for k, e in v.iteritems())
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