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#!/usr/bin/env python# -*- coding: UTF-8 -*-import webclass main(object):    def GET(self):        return """<form method="post" enctype="multipart/form-data"><input type="file" name="file" /><input type="submit" /></form>"""    def POST(self):        i = web.input(_unicode = False)        this_is_gonna_generate_error()        return "OK POST"if __name__ == "__main__":    app = web.application(['/', 'main'], globals())    app.run()