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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 create_directory(self, path=None):
 """Create the directory for the given path. If path is None use the path of this instance :param path: the path to create :type path: str :returns: None :rtype: None :raises: OSError """

        if path is None:
            path = self.get_path()
        if not os.path.exists(path):
            os.makedirs(path)