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importstring.py

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importstring.py

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"""
A simple utility to import something by its string name.
"""
from __future__ import annotations
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
from typing import Any
def import_item(name: str) -> Any:
"""Import and return ``bar`` given the string ``foo.bar``.
Calling ``bar = import_item("foo.bar")`` is the functional equivalent of
executing the code ``from foo import bar``.
Parameters
----------
name : string
The fully qualified name of the module/package being imported.
Returns
-------
mod : module object
The module that was imported.
"""
parts = name.rsplit(".", 1)
if len(parts) == 2:
# called with 'foo.bar....'
package, obj = parts
module = __import__(package, fromlist=[obj])
try:
pak = getattr(module, obj)
except AttributeError as e:
raise ImportError("No module named %s" % obj) from e
return pak
else:
# called with un-dotted string
return __import__(parts[0])
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