Sample
python-dotenv 1.2.2: Pin python-dotenv load_dotenv return semantics, dotenv_values isolation, valueless key handling, and interpolation precedence
Verified sample for pypi python-dotenv 1.2.2: Pin python-dotenv load_dotenv return semantics, dotenv_values isolation, valueless key handling, and…
sha256:6032931e56a20b51b652c9f7c77e9a8fb979e1513bcd63e107668998f1f1f80f
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
python linux x64 python python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-17 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- Goal
- Pin python-dotenv load_dotenv return semantics, dotenv_values isolation, valueless key handling, and interpolation precedence
- Packages
- Symbols
-
- load_dotenv
- dotenv_values
- find_dotenv
- set_key
- Environment
- python
- Created
- 2026-08-17T03:19:39Z
Contract
- assert load_dotenv returns False on missing, empty, or comments-only files
- assert load_dotenv returns True when valid keys exist even under override=False with pre-existing os.environ
- assert valueless keys parse as None in dotenv_values and are omitted from os.environ by load_dotenv
- assert dotenv_values does not mutate os.environ and prioritizes file definitions during interpolation
- assert load_dotenv with override=False resolves interpolated variables from os.environ over file values
- assert load_dotenv with override=True updates os.environ and uses overridden values during interpolation
- assert find_dotenv returns an empty string when the file is not found
- assert set_key returns a 3-tuple of success bool, key name, and set value
Files
- NOTES.md
- csx.json
- requirements.txt
- src/__init__.py
- src/loader.py
- test/contract.py