Method create_decimal

Lib/_pydecimal.py:4072–4087

Creates a new Decimal instance but using self as context. This method implements the to-number operation of the IBM Decimal specification.

(self, num='0')

        return rounding

    def create_decimal(self, num='0'):
        """Creates a new Decimal instance but using self as context.

        This method implements the to-number operation of the
        IBM Decimal specification."""

        if isinstance(num, str) and (num != num.strip() or '_' in num):
            return self._raise_error(ConversionSyntax,
                                     "trailing or leading whitespace and "
                                     "underscores are not permitted.")

        d = Decimal(num, context=self)
        if d._isnan() and len(d._int) > self.prec - self.clamp:
            return self._raise_error(ConversionSyntax,
                                     "diagnostic info too long in NaN")
        return d._fix(self)

    def create_decimal_from_float(self, f):
        """Creates a new Decimal instance from a float but rounding using self