Make empty durations an error in pure-Python parser #903
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Some of Debian's test runners noticed that the pydantic-extra-types
tests are failing on 32-bit architectures:
______________________ test_invalid_zero_duration_string _______________________
def test_invalid_zero_duration_string():
"""'P' is not a valid ISO 8601 duration and should raise a validation error."""
> with pytest.raises(ValidationError):
E Failed: DID NOT RAISE <class 'pydantic_core._pydantic_core.ValidationError'>
tests/test_pendulum_dt.py:447: Failed
Debian currently has pendulum 3.0.0, which disabled the Rust extensions
if `struct.calcsize("P") == 4`, and the Rust and Python parsers disagree
about how to handle an empty duration: the Rust parser reports an error,
while the Python parser returns `Duration()`. 3.1.0 removes that
particular limitation on using Rust extensions on 32-bit architectures,
but the parser discrepancy still seems to be present.
I don't have access to the full text of the standard, but Wikipedia's
summary says 'However, at least one element must be present, thus "P" is
not a valid representation for a duration of 0 seconds', so I think the
Rust parser is correct. Adjust the Python parser to match.
CodSpeed Performance ReportMerging #903 will not alter performanceComparing Summary
|
ashb
approved these changes
Jul 16, 2025
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Some of Debian's test runners noticed that the pydantic-extra-types tests are failing on 32-bit architectures:
Debian currently has pendulum 3.0.0, which disabled the Rust extensions if
struct.calcsize("P") == 4, and the Rust and Python parsers disagree about how to handle an empty duration: the Rust parser reports an error, while the Python parser returnsDuration(). 3.1.0 removes that particular limitation on using Rust extensions on 32-bit architectures, but the parser discrepancy still seems to be present.I don't have access to the full text of the standard, but Wikipedia's summary says 'However, at least one element must be present, thus "P" is not a valid representation for a duration of 0 seconds', so I think the Rust parser is correct. Adjust the Python parser to match.
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