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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 _touch_dir(self, path):
 """ A helper function to create a directory if it doesn't exist. path: A string containing a full path to the directory to be created. """

        try:
            os.makedirs(path)
        except OSError as e:
            if e.errno != errno.EEXIST:
                raise