IOLoop.spawn_callback, which makes the IOLoop responsible for the call. If it fails, the IOLoop will log a stack trace: # The IOLoop will catch the exception and print a stack trace in # the logs. Note that determine the current user based on, e.g., the value of a cookie. Here is an example that lets users log into the application simply by specifying a nickname, which is then saved in a cookie: class BaseHandler(tornado the web, including Google/Gmail, Facebook, Twitter, and FriendFeed. The module includes methods to log users in via these sites and, where applicable, methods to authorize access to the service so you can

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 IOLoop.spawn_callback, which makes the IOLoop responsible for the call. If it fails, the IOLoop will log a stack trace: # The IOLoop will catch the exception and print a stack trace in # the logs. Note determine the current user based on, e.g., the value of a cookie. Here is an example that lets users log into the application simply by specifying a nickname, which is then saved in a cookie: class BaseHandler(tornado

. . . . . . . 1345 78 Logging 1361 78.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1362 78.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1363 78.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1364 78.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1503 98.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1507 98.5 Other Test

. . . . . . . 1345 78 Logging 1361 78.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1362 78.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1363 78.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1364 78.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1503 98.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1507 98.5 Other Test

. . . . . . . 1573 80 Logging 1593 80.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1594 80.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1595 80.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1596 80.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1778 102.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1782 102.5 Other Test

. . . . . . . 1573 80 Logging 1593 80.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1594 80.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1595 80.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1596 80.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1778 102.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1782 102.5 Other Test

. . . . . . . 1573 80 Logging 1593 80.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1594 80.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1595 80.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1596 80.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1778 102.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1782 102.5 Other Test

. . . . . . . 1654 82 Logging 1656 82.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1657 82.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1658 82.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1659 82.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1829 103.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1833 103.5 Other Test

. . . . . . . 1652 82 Logging 1654 82.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1655 82.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1656 82.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1657 82.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1827 103.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1831 103.5 Other Test

. . . . . . . 1651 82 Logging 1653 82.1 Log event structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1654 82.2 Processing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1655 82.3 Testing log events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1656 82.4 Environment variables . . . . . . . . . . . . . . . . . . with Test Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1826 103.4 Testing Log Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1830 103.5 Other Test