changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support tornado.options — Command-line parsing tornado.stack_context — Exception handling across asynchronous callbacks changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support tornado.options — Command-line parsing Global functions OptionParser class tornado.stack_context — Exception version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

autoreload — Automatically detect code changes in development tornado.log — Logging support tornado.options — Command-line parsing tornado.stack_context — Exception handling across asynchronous callbacks autoreload — Automatically detect code changes in development tornado.log — Logging support tornado.options — Command-line parsing Global functions OptionParser class tornado.stack_context — Exception version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support tornado.options — Command-line parsing Global functions OptionParser class tornado.testing — Unit testing support version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util tornado.log — Logging support LogFormatter enable_pretty_logging() define_logging_options() tornado.options — Command-line parsing Global functions define() options parse_command_line() parse_config_file() version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util tornado.log — Logging support LogFormatter enable_pretty_logging() define_logging_options() tornado.options — Command-line parsing Global functions define() options parse_command_line() parse_config_file() version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util tornado.log — Logging support LogFormatter enable_pretty_logging() define_logging_options() tornado.options — Command-line parsing Global functions define() options parse_command_line() parse_config_file() version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util tornado.log — Logging support LogFormatter enable_pretty_logging() define_logging_options() tornado.options — Command-line parsing Global functions define() options parse_command_line() parse_config_file() version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util tornado.log — Logging support LogFormatter enable_pretty_logging() define_logging_options() tornado.options — Command-line parsing Global functions define() options parse_command_line() parse_config_file() The options are then accessible as attributes of tornado.options.options: # myapp/db.py from tornado.options import define, options define("mysql_host", default="127.0.0.1:3306", help="Main user DB")

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 code tornado.util changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support tornado.options — Command-line parsing Global functions OptionParser class tornado.testing — Unit testing support version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options

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 code tornado.util changes in development tornado.concurrent — Work with Future objects tornado.log — Logging support tornado.options — Command-line parsing Global functions OptionParser class tornado.testing — Unit testing support version 4.2: This function existed in prior versions but was broken and undocumented until 4.2. tornado.options — Command-line parsing A command line parsing module that lets modules define their own options