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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 show_tutorial(self):

 """Show the Spyder tutorial in the Help plugin, opening it if needed"""

        self.switch_to_plugin()
        tutorial_path = get_module_source_path('spyder.plugins.help.utils')
        tutorial = osp.join(tutorial_path, 'tutorial.rst')
        text = open(tutorial).read()
        self.show_rich_text(text, collapse=True)