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# (C) Copyright 2005-2023 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!
""" A function to import symbols. """
from importlib import import_module
from traits.trait_base import xgetattr
def import_symbol(symbol_path):
""" Import the symbol defined by the specified symbol path.
Examples
--------
import_symbol('tarfile:TarFile') -> TarFile
import_symbol('tarfile:TarFile.open') -> TarFile.open
To allow compatibility with old-school traits symbol names we also allow
all-dotted paths, but in this case you can only import top-level names
from the module.
import_symbol('tarfile.TarFile') -> TarFile
"""
if ":" in symbol_path:
module_name, symbol_name = symbol_path.split(":")
module = import_module(module_name)
symbol = xgetattr(module, symbol_name)
else:
components = symbol_path.split(".")
module_name = ".".join(components[:-1])
symbol_name = components[-1]
module = import_module(module_name)
symbol = getattr(module, symbol_name)
return symbol
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