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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 set_debugger(self, debugger):
 """ Set debugger to run when an error occurs in published method. You can also set debugger by passing `debugger` argument to the class constructor. :type debugger: {'pdb', 'ipdb', None} :arg debugger: type of debugger. """

        if debugger == 'pdb':
            import pdb
            self.debugger = pdb
        elif debugger == 'ipdb':
            import ipdb
            self.debugger = ipdb
        else:
            self.debugger = debugger