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# (C) Copyright 2007-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" The interface for import managers. """
# Enthought library imports.
from traits.api import Interface
class IImportManager(Interface):
"""The interface for import managers."""
def import_symbol(self, symbol_path):
"""Import the symbol defined by the specified symbol path.
'symbol_path' is a string containing the path to a symbol through the
Python package namespace.
It can be in one of two forms:
1) 'foo.bar.baz'
Which is turned into the equivalent of an import statement that
looks like::
from foo.bar import baz
With the value of 'baz' being returned.
2) 'foo.bar:baz' (i.e. a ':' separating the module from the symbol)
Which is turned into the equivalent of::
from foo import bar
eval('baz', bar.__dict__)
With the result of the 'eval' being returned.
The second form is recommended as it allows for nested symbols to be
retreived, e.g. the symbol path 'foo.bar:baz.bling' becomes::
from foo import bar
eval('baz.bling', bar.__dict__)
The first form is retained for backwards compatability.
"""
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