Bug report
When you try to serialize a NaN, inf or -inf with json.dumps(..., allow_nan=False), the error messages are inconsistent, depending on whether you use the indent argument or not.
>>>json.dumps(float('nan'), allow_nan=False) ValueError: OutofrangefloatvaluesarenotJSONcompliant>>>json.dumps(float('nan'), allow_nan=False, indent=4) ValueError: OutofrangefloatvaluesarenotJSONcompliant: nanThat is because if you don't use indent, the encoding is done in C code
,
but if you use indent, the encoding is done in pure Python code
, and the error messages are different between the two.
Your environment
CPython versions tested on: 3.11.0
Operating system and architecture: MacOS 12.6, Apple Silicon
Linked PRs
gh-99925: Fix inconsistency in json.dumps() error messages #99926