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formatting
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@ -375,15 +375,15 @@ methods on the config object as well to load from individual files. For a
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complete reference, read the :class:`~flask.Config` object's
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documentation.
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Configuring from Environmental Variables
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----------------------------------------
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Configuring from Environment Variables
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--------------------------------------
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In addition to pointing to configuration files using environment variables, you
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may find it useful (or necessary) to control your configuration values
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directly from the environment.
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may find it useful (or necessary) to control your configuration values directly
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from the environment.
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Environment variables can be set on Linux or OS X with the export command in the
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shell before starting the server::
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Environment variables can be set on Linux or OS X with the export command in
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the shell before starting the server::
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$ export SECRET_KEY='?\xbf,\xb4\x8d\xa3"<\x9c\xb0@\x0f5\xab,w\xee\x8d$0\x13\x8b83'
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$ export DEBUG=False
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@ -397,10 +397,10 @@ On Windows systems use the `set` builtin instead::
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>set DEBUG=False
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While this approach is straightforward to use, it is important to remember that
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environment variables are strings -- they are not automatically deserialized into Python
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types.
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environment variables are strings -- they are not automatically deserialized
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into Python types.
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Here is an example of a configuration file that uses environmental variables::
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Here is an example of a configuration file that uses environment variables::
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# Example configuration
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import os
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@ -415,14 +415,14 @@ Here is an example of a configuration file that uses environmental variables::
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raise ValueError("No secret key set for Flask application")
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Notice that any value besides an empty string will be interpreted as a boolean True value in Python, which
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requires care if an environment explicitly sets values intended to be False.
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Notice that any value besides an empty string will be interpreted as a boolean
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``True`` value in Python, which requires care if an environment explicitly sets
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values intended to be ``False``.
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Make sure to load the configuration very early on, so that extensions have
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the ability to access the configuration when starting up. There are other
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methods on the config object as well to load from individual files. For a
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complete reference, read the :class:`~flask.Config` object's
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documentation.
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Make sure to load the configuration very early on, so that extensions have the
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ability to access the configuration when starting up. There are other methods
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on the config object as well to load from individual files. For a complete
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reference, read the :class:`~flask.Config` class documentation.
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Configuration Best Practices
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----------------------------
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