nested_dict_tools 0.2.0

Utilities for Python nested dictionaries.

🪆 Nested Dict Tools

Nested Dict Tools is a Python package that provides utilities for working with nested dictionaries. It includes:

• Recursive types for describing nested mappings and dictionaries.
• Fully typed functions to:
  • Flatten and unflatten nested dictionaries.
  • Get and set deeply nested values.

from nested_dict_tools import flatten_dict, unflatten_dict, get_deep, set_deep

nested = {'a': {'b': {'c': 42}}}

# Get a deeply nested value
value = get_deep(nested, ['a', 'b'])
print(value)  # Output: {'c': 42}

# Set a deeply nested value
set_deep(nested, ['a', 'z'], 'new_value')
print(nested)  # Output: {'a': {'b': {'c': 42}, 'z': 'new_value'}}

# Flatten the nested dictionary
flat = flatten_dict(nested, sep='.')
print(flat)  # Output: {'a.b.c': 42, 'a.z': 'new_value'}

# Unflatten the flattened dictionary
unflattened = unflatten_dict(flat, sep='.')
print(unflattened == nested)  # Output: True

# Recursive types:
type NestedDict[K, V] = dict[K, NestedDictNode[K, V]]
type NestedDictNode[K, V] = V | NestedDict[K, V]
# Similar types for Mapping and MutableMapping

⬇️ Installation

You can install Nested Dict Tools via pip:

pip install nested-dict-tools

🧾 License

MIT