dateutil
Extensions to Python's datetime module for enhanced date and time handling.
- Status
- Generally available
- Last checked
- Checked · Oct 15, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
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.
Dateutil stands out with its comprehensive set of extensions for the Python datetime module, offering unparalleled flexibility in date and time handling.
When it fits — and when it doesn’t
A good fit for
Developers working with complex date and time manipulations in Python
Projects requiring robust timezone handling and flexible parsing capabilities
Look elsewhere if
Applications that require minimal dependencies or have strict size constraints
Scenarios where only basic datetime functionality is needed
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited documentation for advanced features
Advanced parsing rules and timezone handling lack comprehensive examples in official docs
- 02
Performance issues with large datasets
Parsing and manipulation of extensive date-time data can lead to significant performance degradation
What it does well
Flexible date and time parsing
Enhanced timezone handling
Relative delta calculations for dates and times
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 dateutil
Setup steps, common gotchas and what to check after 30 days.
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