Macro pyo3::pyobject_native_type_core

macro_rules! pyobject_native_type_core {
    ($name : ty, $typeobject : expr, # module = $module : expr
 $(, # checkfunction = $checkfunction : path) ? $(; $generics : ident) *) => { ... };
    ($name : ty, $typeobject : expr $(, # checkfunction = $checkfunction : path) ?
 $(; $generics : ident) *) => { ... };
}

Declares all of the boilerplate for Python types.