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1315
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1 try:
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2 import http.client as httplib
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3 except ImportError:
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4 import httplib # type: ignore
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5 import cgi
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6
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7 class PrettyErrorHandler(object):
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8 """
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9 mix-in to improve cyclone.web.RequestHandler
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10 """
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11 def get_error_html(self, status_code, **kwargs):
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12 try:
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13 tb = kwargs['exception'].getTraceback()
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14 except AttributeError:
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15 tb = ""
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16 return "<html><title>%(code)d: %(message)s</title>" \
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17 "<body>%(code)d: %(message)s<pre>%(tb)s</pre></body></html>" % {
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18 "code": status_code,
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19 "message": httplib.responses[status_code],
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20 "tb" : cgi.escape(tb),
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21 }
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