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from sympy.external import import_module
from sympy.functions import (log, sin, cos, tan, cot, csc, sec, erf, gamma, uppergamma)
from sympy.functions.elementary.hyperbolic import acosh, asinh, atanh, acoth, acsch, asech, cosh, sinh, tanh, coth, sech, csch
from sympy.functions.elementary.trigonometric import atan, acsc, asin, acot, acos, asec
from sympy.functions.special.error_functions import fresnelc, fresnels, erfc, erfi, Ei
from sympy import (Basic, Mul, Add, Pow, Integral, exp)

matchpy = import_module("matchpy")

if matchpy:
    from matchpy import Operation, CommutativeOperation, AssociativeOperation, OneIdentityOperation
    from matchpy.expressions.functions import op_iter, create_operation_expression, op_len

    Operation.register(Integral)
    Operation.register(Pow)
    OneIdentityOperation.register(Pow)

    Operation.register(Add)
    OneIdentityOperation.register(Add)
    CommutativeOperation.register(Add)
    AssociativeOperation.register(Add)

    Operation.register(Mul)
    OneIdentityOperation.register(Mul)
    CommutativeOperation.register(Mul)
    AssociativeOperation.register(Mul)

    Operation.register(exp)
    Operation.register(log)
    Operation.register(gamma)
    Operation.register(uppergamma)
    Operation.register(fresnels)
    Operation.register(fresnelc)
    Operation.register(erf)
    Operation.register(Ei)
    Operation.register(erfc)
    Operation.register(erfi)
    Operation.register(sin)
    Operation.register(cos)
    Operation.register(tan)
    Operation.register(cot)
    Operation.register(csc)
    Operation.register(sec)
    Operation.register(sinh)
    Operation.register(cosh)
    Operation.register(tanh)
    Operation.register(coth)
    Operation.register(csch)
    Operation.register(sech)
    Operation.register(asin)
    Operation.register(acos)
    Operation.register(atan)
    Operation.register(acot)
    Operation.register(acsc)
    Operation.register(asec)
    Operation.register(asinh)
    Operation.register(acosh)
    Operation.register(atanh)
    Operation.register(acoth)
    Operation.register(acsch)
    Operation.register(asech)

    @op_iter.register(Integral)  # type: ignore
    def _(operation):
        return iter((operation._args[0],) + operation._args[1])

    @op_iter.register(Basic)  # type: ignore
    def _(operation):
        return iter(operation._args)

    @op_len.register(Integral)  # type: ignore
    def _(operation):
        return 1 + len(operation._args[1])

    @op_len.register(Basic)  # type: ignore
    def _(operation):
        return len(operation._args)

    @create_operation_expression.register(Basic)
    def sympy_op_factory(old_operation, new_operands, variable_name=True):
         return type(old_operation)(*new_operands)