In .pxd file, I wrote

_Point operator+(const _Point other) const
_Point operator -(const _Point other) const
bool operator==(const _Point other) const

In .pyx file, I wrote

def eq(self, Point other):
cdef _Point* selfptr = self.c_point.get()
cdef _Point* otherptr = other.c_point.get()
return selfptr[0] == otherptr[0]

But it comes to operators like __add__ , I cannot do the same thing like ==.

def add(self, Point other):
cdef _Point * selfptr = self.c_point.get()
cdef _Point * otherptr = other.c_point.get()
return selfptr[0] + otherptr[0]

Error Message

× python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [27 lines of output]
      
      Error compiling Cython file:
      ------------------------------------------------------------
      ...
              return not self.__eq__(other)
      
          def __add__(self, Point other):
              cdef _Point * selfptr = self.c_point.get()
              cdef _Point * otherptr = other.c_point.get()
              return selfptr[0] + otherptr[0]
                                ^
      ------------------------------------------------------------
      
      src/Geometry/Point/Point.pyx:170:26: Cannot convert '_Point' to Python object

How can I fix this? Thank you