Coroutines Queue example - a concurrent web spider Structure of a Tornado web application Templates and UI Authentication and security Running and deploying Web framework tornado.web — RequestHandler and methods Error Handling Redirection Asynchronous handlers Templates and UI Configuring templates Template syntax Internationalization UI modules Authentication and security Cookies and secure cookies User arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler.initialize

arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler. the HTML form encoding is ambiguous as to whether an argument is a single value or a list with one element, RequestHandler has distinct methods to allow the application to indicate whether or not it expects are available in self.request.files, which maps names (the name of the HTML element) to a list of files. Each file is a dictionary of the form {"filename":..., "content_type":..., "body":

arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler. the HTML form encoding is ambiguous as to whether an argument is a single value or a list with one element, RequestHandler has distinct methods to allow the application to indicate whether or not it expects are available in self.request.files, which maps names (the name of the HTML element) to a list of files. Each file is a dictionary of the form {"filename":..., "content_type":..., "body":

arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler. the HTML form encoding is ambiguous as to whether an argument is a single value or a list with one element, RequestHandler has distinct methods to allow the application to indicate whether or not it expects are available in self.request.files, which maps names (the name of the HTML element) to a list of files. Each file is a dictionary of the form {"filename":..., 5.1. User’s guide 21

arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler. the HTML form encoding is ambiguous as to whether an argument is a single value or a list with one element, RequestHandler has distinct methods to allow the application to indicate whether or not it expects are available in self.request.files, which maps names (the name of the HTML element) to a list of files. Each file is a dictionary of the form {"filename":..., "content_type":..., "body":

Coroutines Queue example - a concurrent web spider Structure of a Tornado web application Templates and UI Authentication and security Running and deploying Web framework tornado.web — RequestHandler and methods Error Handling Redirection Asynchronous handlers Templates and UI Configuring templates Template syntax Internationalization UI modules Authentication and security Cookies and secure cookies User arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler.initialize

Coroutines Queue example - a concurrent web spider Structure of a Tornado web application Templates and UI Authentication and security Running and deploying Web framework tornado.web — RequestHandler and methods Error Handling Redirection Asynchronous handlers Templates and UI Configuring templates Template syntax Internationalization UI modules Authentication and security Cookies and secure cookies User arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler.initialize

Coroutines Queue example - a concurrent web spider Structure of a Tornado web application Templates and UI Authentication and security Running and deploying Web framework tornado.web — RequestHandler and methods Error Handling Redirection Asynchronous handlers Templates and UI Configuring templates Template syntax Internationalization UI modules Authentication and security Cookies and secure cookies User arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler.initialize

Coroutines Queue example - a concurrent web spider Structure of a Tornado web application Templates and UI Authentication and security Running and deploying Web framework tornado.web — RequestHandler and methods Error Handling Redirection Asynchronous handlers Templates and UI Configuring templates Template syntax Internationalization UI modules Authentication and security Cookies and secure cookies User arguments and will be passed to the handler’s HTTP method. If a dictionary is passed as the third element of the URLSpec, it supplies the initialization arguments which will be passed to RequestHandler.initialize

the HTML form encoding is ambiguous as to whether an argument is a single value or a list with one element, RequestHandler has distinct methods to allow the application to indicate whether or not it expects are available in self.request.files, which maps names (the name of the HTML element) to a list of files. Each file is a dictionary of the form {"filename":..., "content_type":..., "body": the client closes the connection (but see that method’s docstring for caveats). 6.1.6 Templates and UI Tornado includes a simple, fast, and flexible templating language. This section describes that language