tonyg-rfc3339
Python implementation of RFC 3339
Decision gist · record as of 2026-08-14
No. The package is abandoned (last release 2015-12-05, repository archived, no commits since 2021-05-12), has unclear license metadata, and installs only from source. Modern Python includes better datetime and timezone support; use the standard library or an actively maintained alternative unless you have a specific RFC 3339 compliance requirement that cannot be met otherwise.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Source distribution only; requires a C compiler and build tools to install.
- Python version support is unspecified.
- High install friction due to source distribution only.
License · maintenance · safety
UNKNOWN (unclear) — License treatment is unclear; the source code header states MIT-like terms (permission granted, sublicense allowed), but metadata lists license as UNKNOWN. Verify the actual license intent before relying on it in proprietary or copyleft contexts.
last release 2015-12-05 (3905 days) · last repo commit 2021-05-12 · archived
0 known vulnerabilities (OSV.dev, 2026-08-14) · 434,760 downloads/mo, #6,686 on PyPI
Alternatives
Verify before relying
pip install tonyg-rfc3339
import rfc3339
# Parse an RFC 3339 datetime string
dt = rfc3339.parse_date('2015-12-05T12:00:00Z')
# Format a datetime to RFC 3339
formatted = rfc3339.format_date(dt)- Whether the MIT-like license text in the source is legally binding given the UNKNOWN metadata tag
- Exact Python versions supported (metadata specifies none)
- Whether this package is safe to use in production given its abandoned status and lack of security updates
What it is and what it does
tonyg-rfc3339 is a Python implementation of RFC 3339, the Internet Date/Time Format specification. It provides parsing and formatting routines to convert between RFC 3339 strings and Python datetime objects, along with a UTC tzinfo class. The library adheres strictly to RFC 3339's profile of ISO 8601, making it suitable for applications that need standards-compliant date-time handling in internet protocols and APIs.
The package has been abandoned since 2015 with no active maintenance. It has no runtime dependencies, but installs only as a source distribution, requiring a build environment. The license treatment is unclear despite MIT-like language in the source code. Use this package only if you need strict RFC 3339 compliance and cannot rely on more actively maintained alternatives.
Use it for
- Parse RFC 3339 timestamps from HTTP headers, API responses, or internet protocols that mandate strict compliance
- Format Python datetime objects into RFC 3339 strings for standards-compliant serialization in network communication
- Implement UTC timezone handling in applications that need a tzinfo object before Python's built-in UTC support
- Validate and convert date-time strings in systems that require exact RFC 3339 syntax rather than general ISO 8601
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
The package is abandoned (last release 2015-12-05, repository archived, no commits since 2021-05-12), has unclear license metadata, and installs only from source. Modern Python includes better datetime and timezone support; use the standard library or an actively maintained alternative unless you have a specific RFC 3339 compliance requirement that cannot be met otherwise.
Install
tonyg-rfc3339 on PyPI
Before you install
High install friction due to source distribution only. Maintenance is abandoned—last release was 2015-12-05, repository archived, no commits since 2021-05-12. Not actively maintained.
Source distribution only; requires a C compiler and build tools to install. Python version support is unspecified.
License in practice
License treatment is unclear; the source code header states MIT-like terms (permission granted, sublicense allowed), but metadata lists license as UNKNOWN. Verify the actual license intent before relying on it in proprietary or copyleft contexts.
Quickstart
pip install tonyg-rfc3339
import rfc3339
# Parse an RFC 3339 datetime string
dt = rfc3339.parse_date('2015-12-05T12:00:00Z')
# Format a datetime to RFC 3339
formatted = rfc3339.format_date(dt)Verify before relying
- Whether the MIT-like license text in the source is legally binding given the UNKNOWN metadata tag
- Exact Python versions supported (metadata specifies none)
- Whether this package is safe to use in production given its abandoned status and lack of security updates
Package facts
| License | UNKNOWN unclear |
| Python support | Not specified |
| Install friction | High. Source build required |
| Runtime dependencies | None |
| Maintenance | Abandoned 3,905 days since the last release |
| Last repo commit | repository archived |
| First released | |
| Downloads | 434,760 / month, #6,686 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
Evidence: tonyg-rfc3339-0.1.tar.gz
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See also pyRFC3339 · rfc3339 · udatetime · iso8601 · strict-rfc3339 · ciso8601 · aniso8601 · isodate · ntplib · pytz