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bpo-36841: JSONEncoder call self.default for unsupported floats #28648

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bpo-36841: JSONEncoder call self.default for unsupported floats #28648

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9 changes: 6 additions & 3 deletions Lib/json/encoder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -176,6 +176,11 @@ def default(self, o):
return JSONEncoder.default(self, o)

"""
if isinstance(o, float):
raise ValueError(
"Out of range float values are not JSON compliant: " +
repr(o)
)
raise TypeError(f'Object of type {o.__class__.__name__} '
f'is not JSON serializable')

Expand Down Expand Up @@ -236,9 +241,7 @@ def floatstr(o, allow_nan=self.allow_nan,
return _repr(o)

if not allow_nan:
raise ValueError(
"Out of range float values are not JSON compliant: " +
repr(o))
return self.default(o)

return text

Expand Down