comparable to asynchronous systems, but they do not actually make things asynchronous). Asynchronous operations in Tornado generally return placeholder objects (Futures), with the exception of some low- level get_current_user() may not, so the latter form is necessary if loading the user requires asynchronous operations. The user object may be any type of the application’s choosing. RequestHandler.detach() → IOStream response to a ping frame is received. exception tornado.websocket.WebSocketClosedError Raised by operations on a closed connection. Added in version 3.2. Client-side support tornado.websocket.websocket_connect(url:

comparable to asynchronous systems, but they do not actually make things asynchronous). Asynchronous operations in Tornado generally return placeholder objects (Futures), with the exception of some low-level get_current_user() may not, so the latter form is necessary if loading the user requires asynchronous operations. The user object may be any type of the application’s choosing. RequestHandler.detach() → IOStream response to a ping frame is received. exception tornado.websocket.WebSocketClosedError Raised by operations on a closed connection. Added in version 3.2. Client-side support tornado.websocket.websocket_connect(url:

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Mathematical Operations and Elementary Functions 30 6.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Triple-Quoted String Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 12.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 12.15 Custom

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Mathematical Operations and Elementary Functions 30 6.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Triple-Quoted String Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 12.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 12.15 Custom

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Mathematical Operations and Elementary Functions 30 6.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Triple-Quoted String Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 12.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 12.15 Custom

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5 Mathematical Operations and Elementary Functions 26 5.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 iCONTENTS ii 7.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 7.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 11.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 11.15 Custom

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5 Mathematical Operations and Elementary Functions 26 5.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 iCONTENTS ii 7.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 7.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 11.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 11.15 Custom

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Mathematical Operations and Elementary Functions 30 6.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.3 Arithmetic operations with Bool values . . . . . . . . . . . . . . . . . . . . . . . . 31 6.4 Bitwise Operators . . Triple-Quoted String Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.8 Non-Standard String

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Mathematical Operations and Elementary Functions 30 6.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Triple-Quoted String Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 12.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 12.15 Custom

and one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6 Mathematical Operations and Elementary Functions 30 6.1 Arithmetic Operators . . . . . . . . . . . . . . . . . . . . Triple-Quoted String Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 8.7 Common Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.8 Non-Standard String Aliases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 12.14 Operations on Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 12.15 Custom