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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def extern_drop_handles(self, context_handle, handles_ptr, handles_len):
 """Drop the given Handles."""

    c = self._ffi.from_handle(context_handle)
    handles = self._ffi.unpack(handles_ptr, handles_len)
    c.drop_handles(handles)