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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 add_project_levels(cls, project):
 """ Add project sub levels extra items """


        eitem_path = ''
        eitem_project_levels = {}

        if project is not None:
            subprojects = project.split('.')
            for i in range(0, len(subprojects)):
                if i > 0:
                    eitem_path += "."
                eitem_path += subprojects[i]
                eitem_project_levels['project_' + str(i + 1)] = eitem_path

        return eitem_project_levels