每天睡不够队-睡不够day16-python练习实例71，72，73，74，75

[睡不够123]

题目：编写input()和output()函数输入，输出5个学生的数据记录。

#coding=utf-8

student = {}
N = int(input('人数:'))
def in_put(N):
    for i in range(N):
        i +=1
        student[i] = {}
        a = input('学号：')
        student[i]['num'] = a
        b = input('姓名：')
        student[i]['name'] = b
        student[i]['score'] = {}
        for j in range(3):
            j += 1
            c = input('成绩：')
            student[i]['score'][j] = c
    print(student)

def out_put(N):
    for i in range(N):
        i += 1
        print(student[i]['num'],student[i]['name'])
        for j in range(3):
            j += 1
            print('{}:'.format(j),student[i]['score'][j])

if __name__ == '__main__':
    in_put(N)
    out_put(N)

用字典方法

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题目：创建一个链表。

#coding=utf-8

if __name__ == '__main__':
    lst = []
    for i in range(5):
        a = int(input('输入数：'))
        lst.append(a)
    print(lst)

循环向列表中加入元素

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题目：反向输出一个链表。 

#coding=utf-8

if __name__ == '__main__':
    lst = []
    for i in range(5):
        a = int(input('输入数：'))
        lst.append(a)
    print(lst)
    lst.reverse()
    print(lst)

 reverse方法，没有返回值

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题目：列表排序及连接。

#coding=utf-8

a = [2,1,5,3,9,6]
b = [4,5,7,3,2,1]
a.sort()
print(a)
print(a+b)
a.extend(b)
print(a)

sort将列表排序，两个列表连‘+’还有extend方法

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题目：放松一下，算一道简单的题目。 

#coding=utf-8


for i in range(5):
    n = 0
    if i != 1:
        n += 1
    if i ==3:
        n += 1
    if i == 4:
        n += 1
    if i != 4:
        n += 1
    if n == 3:
        print(64+i)

..........