date-tree 1.0.1

Tree-based date filtering utilities

DateTree

DateTree is a high-level Python utility for managing, filtering, and querying collections of dates stored in a Red Black Tree (RBTree).

It provides a clean, expressive API for adding date ranges, filtering by calendar fields, and performing efficient date queries, while guaranteeing predictable performance and sorted traversal.

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Why DateTree?

DateTree is useful when you need to:

• Store large collections of dates efficiently
• Perform frequent date-based queries (year, month, day)
• Filter dates deterministically and in sorted order
• Enforce constraints like allowed days of the week
• Avoid ad-hoc list filtering or repeated date generation

Dates are stored as keys in an RBTree, giving strong performance guarantees and deterministic behavior.

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Features

• Store dates in a balanced Red Black Tree
• Add single dates or inclusive date ranges
• Delete individual dates or ranges of dates
• Filter dates by:
  • year
  • month
  • day
  • combinations of the above
• Include or exclude specific days of the week
• Efficient range queries
• Sorted traversal
• Explicit, exception-driven error handling

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Basic Usage

This example demonstrates the most common workflow:
include days of the week, add a date range, and filter results.

from datetime import date
from bintrees import RBTree
from date_tree.date_tree import DateTree

tree = RBTree()
builder = DateTree(tree, date_obj="example")

# Include all days of the week
builder.include_days_of_week(include_all=True)

# Add an inclusive date range
builder.add_dates(date(2025, 1, 1), date(2025, 1, 31))

# Filter dates in January 2025
filtered = builder.filter_dates(month=1, year=2025)

Installation

Install from PyPI:

pip install date-tree