Python写一段代码将如下文本转化为四元式元祖列表 =, 3 , , T0 *, 2 , T0, T1 +, R , r , T2 *, T1, T2, A =, A , , B *, 2 , T0, T3 +, R , r ,

text = '''=, 3 , , T0 *, 2 , T0, T1 +, R , r , T2 *, T1, T2, A =, A , , B *, 2 , T0, T3 +, R , r , T4 *, T3, T4, T5 -, R , r , T6 *, T5, T6, B''' lines = text.split('\n') quads = [] for line in lines: quad = tuple(line