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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 get_grammar(self):
 """ Returns the grammar of the UAI file. """

        network_name = Word(alphas).setResultsName('network_name')
        no_variables = Word(nums).setResultsName('no_variables')
        grammar = network_name + no_variables
        self.no_variables = int(grammar.parseString(self.network)['no_variables'])
        domain_variables = (Word(nums)*self.no_variables).setResultsName('domain_variables')
        grammar += domain_variables
        no_functions = Word(nums).setResultsName('no_functions')
        grammar += no_functions
        self.no_functions = int(grammar.parseString(self.network)['no_functions'])
        integer = Word(nums).setParseAction(lambda t: int(t[0]))
        for function in range(0, self.no_functions):
            scope_grammar = Word(nums).setResultsName('fun_scope_' + str(function))
            grammar += scope_grammar
            function_scope = grammar.parseString(self.network)['fun_scope_' + str(function)]
            function_grammar = ((integer)*int(function_scope)).setResultsName('fun_' + str(function))
            grammar += function_grammar

        floatnumber = Combine(Word(nums) + Optional(Literal(".") + Optional(Word(nums))))
        for function in range(0, self.no_functions):
            no_values_grammar = Word(nums).setResultsName('fun_no_values_' + str(function))
            grammar += no_values_grammar
            no_values = grammar.parseString(self.network)['fun_no_values_' + str(function)]
            values_grammar = ((floatnumber)*int(no_values)).setResultsName('fun_values_' + str(function))
            grammar += values_grammar
        return grammar