1.声明一个字典保存一个学生的信息，学生信息中包括: 姓名、年龄、成绩(单科)、电话
student = {'name':'张三','age':18,'score':90,'Tel':'13330131313'}
2.声明一个列表，在列表中保存6个学生的信息(6个题1中的字典)
all_student = [
{'name':'张一','age':18,'score':90,'Tel':'13330131313'},
{'name':'张二','age':19,'score':80,'Tel':'13330131314'},
{'name':'张三','age':19,'score':40,'Tel':'13330131315'},
{'name':'张四','age':18,'score':50,'Tel':'13330131316'},
{'name':'张五','age':20,'score':77,'Tel':'13330131317'},
{'name':'张六','age':17,'score':68,'Tel':'13330131318'}
]
a.统计不及格学生的个数
num = 0
for scores in all_student:
if scores.get('score') < 60 :
num +=1
print('不及格人数：',num)
b.打印不及格学生的名字和对应的成绩
for scores in all_student:
if scores.get('score') < 60 :
print('不及格名字：',scores.get('name'),'成绩：',scores.get('score'))
c.统计未成年学生的个数
year = 0
for years in all_student:
if years.get('age') < 18:
year +=1
print('未成年人数：',year)
d.打印手机尾号是8的学生的名字
for num in all_student:
numbers = num.get('Tel')
if numbers[-1] == '8':
print('手机尾号为8的学生：',num.get('name'))
e.打印最高分和对应的学生的名字
max_score = 0
for stu_dict in all_student:
if stu_dict['score'] > max_score:
max_score = stu_dict['score']
for stu_dict in all_student:
if stu_dict['score'] == max_score:
print(stu_dict['name'],max_score)
f.将列表按学生成绩从大到小排序(挣扎一下，不行就放弃)
all_student.sort(key=lambda x:x['score'],reverse = True)
print(all_student)
12.jpg
