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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 fire(self, state):
 """ Trigger the breakpoint. :param state: The state. """

        if self.action is None or self.action == BP_IPDB:
            import ipdb; ipdb.set_trace() #pylint:disable=F0401
        elif self.action == BP_IPYTHON:
            import IPython
            shell = IPython.terminal.embed.InteractiveShellEmbed()
            shell.mainloop(display_banner="This is an ipython shell for you to happily debug your state!\n" + \
                           "The state can be accessed through the variable 'state'. You can\n" +\
                           "make modifications, then exit this shell to resume your analysis.")
        else:
            self.action(state)