1851     def _power_modulo(self, other, modulo, context=None):  argument
1858         modulo = _convert_other(modulo, raiseit=True)
1867         modulo_is_nan = modulo._isnan()
1877                                         modulo)
1882             return modulo._fix_nan(context)
1887                 modulo._isinteger()):
1895         if not modulo:
1901         if modulo.adjusted() >= context.prec:
1923         modulo = abs(int(modulo))
1928         base = (base.int % modulo * pow(10, base.exp, modulo)) % modulo
1930             base = pow(base, 10, modulo)
1931         base = pow(base, exponent.int, modulo)
2172     def __pow__(self, other, modulo=None, context=None):  argument
2196         if modulo is not None:
2197             return self._power_modulo(other, modulo, context)
4965     def power(self, a, b, modulo=None):  argument
5039         r = a.__pow__(b, modulo, context=self)