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import decimal
import math
from types import MappingProxyType
from typing import NewType, Union
InfNumber = NewType("InfNumber", Union[float, int, decimal.Decimal])
INFINITY_MAPPER = MappingProxyType({
'Infinity': math.inf,
'+Infinity': math.inf,
'-Infinity': -math.inf
})
MATH_INF_MAPPER = MappingProxyType({
math.inf: 'Infinity',
-math.inf: '-Infinity'
def value_to_infnum(value: any) -> InfNumber:
return INFINITY_MAPPER.get(value, value)
def infnum_to_value(value: InfNumber):
return MATH_INF_MAPPER.get(value, value)
__all__ = ['InfNumber', 'infnum_to_value', 'value_to_infnum']
erivlis /
graphinate
