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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 _execute_primitives(self, commands):
 """Run a list of executable primitives on this controller, and distribute the returned data to the associated TDOPromises. Args: commands: A list of Executable Primitives to be run in order. """

        for p in commands:
            if self._scanchain and self._scanchain._debug:
                print("  Executing", p)#pragma: no cover
            p.execute(self)