Automatically detect code changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support tornado.options — Command-line parsing tornado.testing — Unit testing support for asynchronous org/3/library/constants.html#None] Called after the end of a request.Override this method to perform cleanup, logging, etc. This method is primarily intended as a counterpart to prepare. However, there are a few error html#None]) → None [https://docs.python.org/3/library/constants.html#None] Override to customize logging of uncaught exceptions. By default logs instances of HTTPError as warnings without stack traces

on_finish() → None Called after the end of a request. Override this method to perform cleanup, logging, etc. This method is primarily intended as a counterpart to prepare. However, there are a few error Type[BaseException] | None, value: BaseException | None, tb: TracebackType | None) → None Override to customize logging of uncaught exceptions. By default logs instances of HTTPError as warnings without stack traces result (with one argument, the RequestHandler object). The default implementation writes to the logging module’s root logger. May also be customized by overriding Application.log_request. • serve_traceback:

LAPACK functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1345 78 Logging 1361 78.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

LAPACK functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1573 80 Logging 1593 80.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

LAPACK functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1345 78 Logging 1361 78.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

LAPACK functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1573 80 Logging 1593 80.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

LAPACK functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1573 80 Logging 1593 80.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

9 Developer Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1652 82 Logging 1654 82.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

9 Developer Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1651 82 Logging 1653 82.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,

9 Developer Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1651 82 Logging 1653 82.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . around it we can mitigate that here. You may choose how you wish to handle this exception, whether logging it, return a placeholder value or as in the case below where we just printed out a statement. One invocation. This allows macros to include better error diagnostic information, and is commonly used by logging, string-parser macros, and docs, for example, as well as to implement the @__LINE__, @__FILE__,