Create a ZIP archive from a file.
Python: Give a ZIP entry a relative archive name instead of exposing its source directory.
from zipfile import ZipFile, ZIP_DEFLATED
with ZipFile("backup.zip", "w", compression=ZIP_DEFLATED) as archive:
archive.write("notes.txt", arcname="notes.txt")
with ZipFile("backup.zip") as archive:
print(archive.namelist())Expected output EXAMPLE
['notes.txt']
Details
Save as snippet.py and run python3 snippet.py. Uses the Python standard library. Give a ZIP entry a relative archive name instead of exposing its source directory.
Write mode replaces an existing backup.zip.
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
de78869289d478a4f30a29983ae1122d67600683fb65fd6665529c55aad172de- 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.
printf 'saved\n' > notes.txt
Observed standard output
['notes.txt']
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.
Additional assertions that passed
Checks recorded by the test harness. Where Python assertions are shown, browser cases use Playwright and simulator cases may inspect pin transitions: result.stdout is captured output, work is the temporary directory, and Path is pathlib.Path. The harness also imports json and csv.
from zipfile import ZipFile
with ZipFile('backup.zip') as archive:
assert archive.read('notes.txt') == b'saved\n'