Sample
Handle httpx URL, protocol, status, and header validation error paths and exception hierarchy for invalid inputs
sha256:f65b0c7c59005a63d2b35d92ec99999b9bc070046fe04260c2b5671e658b0aae
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- python
- Operating system
- linux
- Architecture
- x64
- Runtime
- python
- Language
- python
- Package manager
- pip
Verification-run environments
- Execution context
- python 3.12
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- python 3.12
- Language
- python
- Package manager
- pip
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17
Case
- Goal
- Handle httpx URL, protocol, status, and header validation error paths and exception hierarchy for invalid inputs HOW
- Packages
-
httpx 0.28.1
- Environment
- python
- Created
- 2026-08-17T06:39:18Z
Commonly assumed
httpx.InvalidURL inherits from httpx.HTTPError and catching httpx.HTTPError catches URL formatting errors
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- httpx.InvalidURL inherits directly from builtins.Exception rather than httpx.HTTPError or httpx.RequestError, so catching httpx.HTTPError fails to catch URL validation failures.
- httpx.URL raises httpx.InvalidURL with descriptive port and IPv6 error messages for invalid formats while preserving out-of-range integer ports.
- httpx.URL.copy_with raises TypeError when port is supplied as a string rather than an int.
- HTTPTransport raises httpx.UnsupportedProtocol (which inherits from httpx.HTTPError) for missing schemes or non-HTTP protocols.
- Response.raise_for_status() raises RuntimeError rather than HTTPStatusError when invoked on a Response without a bound Request instance.
- Response.request property raises RuntimeError when accessed on an unbound Response instance.
- Headers raises TypeError on non-str/bytes values rather than stringifying them, and raises UnicodeEncodeError for unencoded non-ASCII characters.
Files
- NOTES.md
- csx.json
- requirements.txt
- test/contract.py
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- python 3.12 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17 · ed25519:d91480838ac982c9