Current File : //usr/lib64/python2.7/site-packages/tornado/autoreload.pyc
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Most applications should not access this module directly. Instead,
pass the keyword argument ``autoreload=True`` to the
`tornado.web.Application` constructor (or ``debug=True``, which
enables this setting and several others). This will enable autoreload
mode as well as checking for changes to templates and static
resources. Note that restarting is a destructive operation and any
requests in progress will be aborted when the process restarts. (If
you want to disable autoreload while using other debug-mode features,
pass both ``debug=True`` and ``autoreload=False``).
This module can also be used as a command-line wrapper around scripts
such as unit test runners. See the `main` method for details.
The command-line wrapper and Application debug modes can be used together.
This combination is encouraged as the wrapper catches syntax errors and
other import-time failures, while debug mode catches changes once
the server has started.
This module depends on `.IOLoop`, so it will not work in WSGI applications
and Google App Engine. It also will not work correctly when `.HTTPServer`'s
multi-process mode is used.
Reloading loses any Python interpreter command-line arguments (e.g. ``-u``)
because it re-executes Python using ``sys.executable`` and ``sys.argv``.
Additionally, modifying these variables will cause reloading to behave
incorrectly.
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.. versionchanged:: 4.1
The ``io_loop`` argument is deprecated.
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Intended to be used at the end of scripts like unit test runners,
to run the tests again after any source file changes (but see also
the command-line interface in `main`)
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Note that for open file and socket handles it is generally
preferable to set the ``FD_CLOEXEC`` flag (using `fcntl` or
``tornado.platform.auto.set_close_exec``) instead
of using a reload hook to close them.
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s| Usage:
python -m tornado.autoreload -m module.to.run [args...]
python -m tornado.autoreload path/to/script.py [args...]
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Scripts may be specified by filename or module name::
python -m tornado.autoreload -m tornado.test.runtests
python -m tornado.autoreload tornado/test/runtests.py
Running a script with this wrapper is similar to calling
`tornado.autoreload.wait` at the end of the script, but this wrapper
can catch import-time problems like syntax errors that would otherwise
prevent the script from reaching its call to `wait`.
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