code = <Cython.Compiler.Code.CCodeWriter object at 0x7fa680828ec0>dtype = <CNumericType int>, maxdepth = 0    def get_type_information_cname(code, dtype, maxdepth=None):        """        Output the run-time type information (__Pyx_TypeInfo) for given dtype,        and return the name of the type info struct.            Structs with two floats of the same size are encoded as complex numbers.        One can separate between complex numbers declared as struct or with native        encoding by inspecting to see if the fields field of the type is        filled in.        """        namesuffix = mangle_dtype_name(dtype)        name = "__Pyx_TypeInfo_%s" % namesuffix        structinfo_name = "__Pyx_StructFields_%s" % namesuffix            if dtype.is_error: return "<error>"            # It's critical that walking the type info doesn't use more stack        # depth than dtype.struct_nesting_depth() returns, so use an assertion for this        if maxdepth is None: maxdepth = dtype.struct_nesting_depth()        if maxdepth <= 0:>           assert False                   ^^^^^E           AssertionError

import cythoncdef packedstruct struct_1:int f0char f1[5]cdefdouble compare_struct_1(const struct_1 a, const struct_1 b):  cdefdouble result=0  cdef Py_ssize_t i0  result+= a.f0== b.f0for i0inrange(5):    result+= a.f1[i0]== b.f1[i0]return result/6cdef packedstruct struct_0:longlong f0  struct_1 f1[2]cdefdouble compare_struct_0(const struct_0 a, const struct_0 b):  cdefdouble result=0  cdef Py_ssize_t i0  result+= a.f0== b.f0for i0inrange(2):    result+= compare_struct_1(a.f1[i0], b.f1[i0])return result/3cdefclass Backend:  cdef const struct_0[:] a  cdef const struct_0[:] bdef__init__(self, const struct_0[:] a notNone, const struct_0[:] b notNone):self.a= aself.b= b@cython.initializedcheck(False)@cython.wraparound(False)  cdefdouble compare(self, Py_ssize_t i, Py_ssize_t j):return compare_struct_0(self.a[i],self.b[j])

dtype_inner = np.dtype([("ix", "i4"), ("name", "S5")])dtype = np.dtype([("pair_ix", "i8"), ("pair", dtype_inner, 2)])