You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
# Copyright (c) IPython Development Team.
|
|
# Distributed under the terms of the Modified BSD License.
|
|
from __future__ import annotations
|
|
|
|
from typing import Any, Dict
|
|
|
|
|
|
def nested_update(this: Dict[Any, Any], that: Dict[Any, Any]) -> Dict[Any, Any]:
|
|
"""Merge two nested dictionaries.
|
|
|
|
Effectively a recursive ``dict.update``.
|
|
|
|
Examples
|
|
--------
|
|
Merge two flat dictionaries:
|
|
>>> nested_update(
|
|
... {'a': 1, 'b': 2},
|
|
... {'b': 3, 'c': 4}
|
|
... )
|
|
{'a': 1, 'b': 3, 'c': 4}
|
|
|
|
Merge two nested dictionaries:
|
|
>>> nested_update(
|
|
... {'x': {'a': 1, 'b': 2}, 'y': 5, 'z': 6},
|
|
... {'x': {'b': 3, 'c': 4}, 'z': 7, '0': 8},
|
|
... )
|
|
{'x': {'a': 1, 'b': 3, 'c': 4}, 'y': 5, 'z': 7, '0': 8}
|
|
|
|
"""
|
|
for key, value in this.items():
|
|
if isinstance(value, dict):
|
|
if key in that and isinstance(that[key], dict):
|
|
nested_update(this[key], that[key])
|
|
elif key in that:
|
|
this[key] = that[key]
|
|
|
|
for key, value in that.items():
|
|
if key not in this:
|
|
this[key] = value
|
|
|
|
return this
|