C 언어 코드 파이썬으로 옮길 때 주의할 점

/** 
 * Add two 3-d points together.
 */ 
void
ptAdd(const Point *a, const Point *b, Point *out)
{ 
    out->x = a->x + b->x; 
    out->y = a->y + b->y;
    out->z = a->z + b->z;
}   

# Add two Points 
def ptAdd0(a, b, out):
    out.x = _f6(a.x + b.x)
    out.y = _f6(a.y + b.y)
    out.z = _f6(a.z + b.z)

# Add two Points 
def ptAdd(a, b):
    x = _f6(a.x + b.x)
    y = _f6(a.y + b.y)
    z = _f6(a.z + b.z)
    return Point(x, y, z)

    def add_vertex(self, other):
        self.V.append(other)
        self.nvert = len(self.V)

/**
 * Return the index of the vertex that matches this one.  Insert if
 * needed.
 */
static  int
match_vtx(Point *vtx, Dome *dome, int *nv)
{
    int i;
 
    for(i=0; i < *nv; ++i)
      if( ptDist(vtx, &dome->vertices[i]) < .1 )
        return i;
 
    if( *nv >= dome->nvert ) {
      fprintf(stderr, "Internal error: out of vertices in tesselate\n");
      return 0;
    }
 
    dome->vertices[*nv] = *vtx;
    return (*nv)++;
}

  def match_vtx(self, target):
        # ...
        pos = self.vtx_find0(target)
        if pos != -1:
            return pos
 
        # Add new vertex - Point object 
        self.add_vertex(target)

    # Point object 
    def add_vertex(self, other):
        t = Point(other.x, other.y, other.z)
        self.V.append(t)