uri-template
RFC 6570 URI Template Processor
Decision gist · record as of 2026-08-14
Yes, if your use case is stable URI template expansion and you do not require active maintenance. The package is feature-complete for RFC 6570 and its documented extensions, has no known vulnerabilities, and carries a permissive license. However, do not adopt it if you need ongoing bug fixes, security patches, or support for future RFC revisions—the project is abandoned and will not receive updates.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low install friction—pure Python wheel with no runtime dependencies.
- However, the package is abandoned as of 1150 days since last release, so no active maintenance or security updates are forthcoming.
License · maintenance · safety
MIT License (permissive) — MIT License permits commercial and private use, modification, and distribution with minimal restrictions, making it safe to adopt from a licensing standpoint.
last release 2023-06-21 (1150 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 46,735,284 downloads/mo, #607 on PyPI
Alternatives
Verify before relying
pip install uri-template
import uri_template
template = uri_template.URITemplate('{scheme}://{host}{/path*}')
result = template.expand(scheme='https', host='example.com', path=['api', 'v1', 'users'])
print(result) # https://example.com/api/v1/users- Whether the RFC 6570 standard and its extensions remain stable enough that abandonment poses no practical risk for typical use cases.
- Real-world compatibility with modern URI template consumers and whether edge cases in nested structures or partial expansion are well-tested.
What it is and what it does
uri-template is a Python implementation of RFC 6570 URI Templates that expands template strings by substituting variables with provided values. It handles standard RFC 6570 syntax (e.g., {var}, {+var}, {#var}) and adds several practical extensions: non-string values like booleans and numbers are automatically converted; nested lists and dictionaries are flattened or combined; default values can be specified inline; and partial expansion allows missing variables to remain as unexpanded expressions for later substitution. The package provides both module-level functions (expand, partial, validate) and a URITemplate class for more structured template handling.
The library is designed for scenarios where URLs or URI-like strings need to be generated dynamically—such as API clients, link templates in hypermedia responses, or configuration-driven URL construction. It supports Python 3.7 through 3.11 and has no external dependencies, making it lightweight and portable.
Use it for
- Build dynamic API endpoint URLs from templates with variable parameters and optional query strings.
- Implement hypermedia link templates in REST APIs that clients can expand with their own data.
- Generate URI patterns for routing or URL rewriting systems that need to preserve template syntax until runtime.
- Construct complex URLs with nested data structures (lists, dictionaries) that must be flattened into query parameters.
- Validate and introspect URI template syntax to extract variable names and modifiers before expansion.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if your use case is stable URI template expansion and you do not require active maintenance.
The package is feature-complete for RFC 6570 and its documented extensions, has no known vulnerabilities, and carries a permissive license. However, do not adopt it if you need ongoing bug fixes, security patches, or support for future RFC revisions—the project is abandoned and will not receive updates.
Install
uri-template on PyPI
Before you install
Low install friction—pure Python wheel with no runtime dependencies. However, the package is abandoned as of 1150 days since last release, so no active maintenance or security updates are forthcoming.
License in practice
MIT License permits commercial and private use, modification, and distribution with minimal restrictions, making it safe to adopt from a licensing standpoint.
Quickstart
pip install uri-template
import uri_template
template = uri_template.URITemplate('{scheme}://{host}{/path*}')
result = template.expand(scheme='https', host='example.com', path=['api', 'v1', 'users'])
print(result) # https://example.com/api/v1/usersVerify before relying
- Whether the RFC 6570 standard and its extensions remain stable enough that abandonment poses no practical risk for typical use cases.
- Real-world compatibility with modern URI template consumers and whether edge cases in nested structures or partial expansion are well-tested.
Package facts
| License | MIT License permissive |
| Python support | Supports the current Python release >=3.7 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Abandoned 1,150 days since the last release |
| First released | |
| Downloads | 46,735,284 / month, #607 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Intended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Software Development :: Libraries :: Python Modules |
Evidence: uri_template-1.3.0-py3-none-any.whl
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See also std-uritemplate · uritemplate · purl · parameter-expansion-patched · expandvars · adaptive-cards-templating-py · prefixcommons · rfc3987 · rfc3987-syntax · xmacro