raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status [https://docs.python.org/3.6/library/traceback.html#traceback.format_exc]). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status [https://docs.python.org/3.6/library/traceback.html#traceback.format_exc]). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status [https://docs.python.org/3.5/library/traceback.html#traceback.format_exc]). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status must use e.g. traceback.format_exception instead of traceback.format_exc). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing Release 6.1 application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status format_exc). 20 Chapter 4. Documentation Tornado Documentation, Release 4.5.3 It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status must use e.g. traceback.format_exception instead of traceback.format_exc). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status must use e.g. traceback.format_exception instead of traceback.format_exc). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status must use e.g. traceback.format_exception instead of traceback.format_exc). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") 6.1. User’s guide 31 Tornado Documentation, Release 6.4 Signed

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status traceback.format_exc). 6.1. User’s guide 25 Tornado Documentation, Release 6.2 It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") Signed cookies contain the encoded value of the cookie in addition

raises an exception, Tornado will call RequestHandler.write_error to generate an error page. tornado.web.HTTPError can be used to generate a specified status code; all other exceptions return a 500 status must use e.g. traceback.format_exception instead of traceback.format_exc). It is also possible to generate an error page from regular handler methods instead of write_error by calling set_status, writing application: application = tornado.web.Application([ (r"/", MainHandler), ], cookie_secret="__TODO:_GENERATE_YOUR_OWN_RANDOM_VALUE_HERE__") 6.1. User’s guide 31 Tornado Documentation, Release 6.4 Signed