dateutil
Extensions to Python's datetime module for enhanced date and time handling.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is dateutil?
Dateutil provides powerful extensions to the standard Python datetime module, enabling more flexible parsing and manipulation of dates and times. It is essential for developers working with complex temporal data in Python applications.
Key differentiator
“Dateutil stands out with its comprehensive set of extensions for the Python datetime module, offering unparalleled flexibility in date and time handling.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Advanced parsing rules and timezone handling lack comprehensive examples in official docs
Parsing and manipulation of extensive date-time data can lead to significant performance degradation
Fit analysis
Who is it for?
✓ Best for
Developers working with complex date and time manipulations in Python
Projects requiring robust timezone handling and flexible parsing capabilities
✕ Not a fit for
Applications that require minimal dependencies or have strict size constraints
Scenarios where only basic datetime functionality is needed
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Next step
Get Started with dateutil
Step-by-step setup guide with code examples and common gotchas.