每日总结 5.17

今日进行了python的学习。对于昨天的测试代码进行了分析学习。

R7-1 字典合并

d1 = eval(input())
d2 = eval(input())

for key in d2.keys():
    d1[key] = d1.get(key, 0) + d2[key]

t = list(d1.items())
t.sort(key=lambda x: ord(x[0]) if type(x[0]) == str else x[0])
out = str(dict(t)).replace(' ', '').replace("'", '"')
print(out)

R7-2 python-列表：统计考试成绩

score = list(input().split())
sum = 0
max_score = float(score[0])
min_score = float(score[0])
passed = 0
for i in range(0,len(score)):
    if float(score[i]) > max_score:
        max_score = float(score[i])
    if float(score[i]) < min_score:
        min_score = float(score[i])
    if float(score[i]) >= 60:
        passed = passed + 1
    sum = sum + float(score[i])
average = sum/len(score)
passed_rate = passed/len(score)*100
print("及格率:{:.1f}%".format(passed_rate))
print("平均分:{:.1f}".format(average))
print("最高分:{:.1f}".format(max_score))
print("最低分:{:.1f}".format(min_score))

R7-3 找出一个整数的所有素因子

def sushu(n):
    i = 2
    factors = []
    while i * i <= n:
        if n % i:
            i += 1
        else:
            n //= i
            factors.append(i)
    if n > 1:
        factors.append(n)
    return factors

n = int(input())
factors = sushu(n)
print(','.join(map(str, factors)))