Weighted Average Maturity of the mortgage pooldef WAM(tup):
return (x[0] * (x[2]/12) + y[0] * (y[weightedAM(tup):
sum_val = sum(amount for amount, rate, t
所以我必须创建一个4-1和9-3在每一行的文件。在那之后,我需要对每个数字做减法。我已经做了一些事情,但是只有第2行的结果。所以在izrazi.txt中是我的输入4-1和9-3,所以我在izlaz.txt中的输出必须是4-1 =3,在新行9-3 =6
with open('izrazi.txt','w') as f: