请问用python怎么解决

Question

 

Answer 1

dic = {"A":0,"B":0,"C":0,"D":0,"E":0,"F":0}
with open("score.txt","r", encoding='utf-8') as f:
    for line in f:
        n,s = line.strip().split(",")
        s = float(s)

        if s>=90:
            f = "A"
        elif s>=80:
            f = "B"
        elif s>=70:
            f = "C"
        elif s>=60:
            f = "D"
        else:
            f = "F"
        dic[f]+=1
        print(n,s,f)
print(dic)