Convert a Unix timestamp to aware UTC.
Python: Supply timezone.utc so the result does not depend on the machine time zone.
from datetime import datetime, timezone
print(datetime.fromtimestamp(0, tz=timezone.utc).isoformat())Expected output EXAMPLE
1970-01-01T00:00:00+00:00
Details
Save as snippet.py and run python3 snippet.py. Uses the Python standard library. Supply timezone.utc so the result does not depend on the machine time zone.
Tested on Ubuntu 24.04.5 LTS · · Python 3.12.3 · python3 3.12.3-0ubuntu2.1
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Unprivileged snippet process, external networking disabled, read-only root filesystem, and a fresh temporary working directory. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged) / C.UTF-8
- Interpreter invocation
python3 -c <published code>- Container image ID
sha256:32dc2d998158b6554c99b73b533f423696a0f3e31e8cbea9db10b5eee9a2fadd- Code SHA-256
9c6be7d235829d98d4f64434ae3d5f535edeaf9002e8840f0acdd0a0e75e9319- Dependencies
- python3 3.12.3-0ubuntu2.1
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
# No input files required.
Observed standard output
1970-01-01T00:00:00+00:00
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.