练习1

【需求】输入一个分数。分数在0-100之间。90以上是A,80以上是B,70以上是C,60以上是D,60以下是E。

方法1、

score = int(input("请输入分数:"))
grad = ""
if score >100 or score <0:
    score = int(input('请输入分数(0-100):'))
elif score >= 90:
    grad = 'A'
elif score >= 80:
    grad = "B"
elif score >= 70:
    grad = "C"
elif score >= 60:
    grad = "D"
else:
    grad = "E"
print("成绩是{0},等级为{1}".format(score,grad))

方法2:

score = int(input("请输入分数:"))
grade = "ABCDE"
num = 0
if score >100 or score < 0:
    score = int(input("请输入分数(0-100):"))
else:
    num = score // 10
    if num < 6:
        num = 5
    print('分数为{0},等级为{1}'.format(score,grade[9-num]))

【需求】用列表和字典存储下表信息,并打印出表中工资高于30000的数据。

d1 = dict(name='勒布朗',age=35,salary=35000,city="洛杉矶")
d2 = dict(name='凯文',age=30,salary=30000,city="布鲁克林")
d3 = dict(name='巴特勒',age=32,salary=20000,city="迈阿密")
d4 = dict(name='欧文',age=28,salary=18000,city="鲁克林")
d5 = dict(name='戴维斯',age=29,salary=33000,city="洛杉矶")

l = [d1,d2,d3,d4,d5]
for i in l:
    if i.get('salary')>30000:
        print(i)
原文地址:https://www.cnblogs.com/ljwpython/p/14632048.html