Current File : //usr/lib/python2.7/site-packages/requestbuilder/mixins/__init__.pyo
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    A mixin that allows the user to specify which user/region names to use
    for the configuration via a --region arg and, if a 'REGION_ENVVAR' class
    variable is set, an environment variable as well.  The included
    update_config_view method actually reads these data and updates
    self.config to point to them.
    s--regiontmetavarsUSER@REGIONtroute_tothelpsCregion and/or user names to search when looking up config file datacCs�|r||j_n|r*||j_n|jjd�ro|jdj|jd�|j|jd��nt|dd�}t
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        Given a string with pattern "[USER@][REGION]", return the user
        and region names that that string represents, if any, and None
        for the values it does not represent.

        Examples:
         - ""          -> (None, None)
         - "spam"      -> (None, "spam")
         - "eggs@"     -> ("eggs", None)
         - "eggs@spam" -> ("eggs", "spam")
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