sortedcontainers
Fast and pure-Python implementation of sorted collections.
- Status
- UnmaintainedNo commits in 907 days.
- Last checked
- Checked · Oct 13, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
SortedContainers provides fast and efficient Python implementations of sorted lists, sets, and dictionaries. It is designed for high performance in scenarios where maintaining a sorted order is crucial.
SortedContainers stands out as a lightweight, dependency-free library that offers high-performance sorted collections in Python.
When it fits — and when it doesn’t
A good fit for
Developers who need efficient sorting operations without external dependencies
Projects that require high-performance sorted collections for large datasets
Look elsewhere if
Scenarios where a pure-Python solution is not preferred due to performance concerns
Applications requiring real-time data processing with extremely low latency
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited language support
SortedContainers is exclusively available in Python, limiting its utility for multi-language projects.
- 02
Performance degradation with very large datasets
While efficient, SortedContainers may exhibit performance issues when handling extremely large datasets due to the overhead of maintaining sorted order.
- 03
Complex setup for non-Pythonic users
The tool leverages Python-specific idioms and patterns which can be challenging for developers unfamiliar with these conventions.
What it does well
High-performance sorted collections
Pure Python implementation without dependencies
Thread-safe operations
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up sortedcontainers
Setup steps, common gotchas and what to check after 30 days.
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