student_id = []
student_name = []
student_age = []
student_class = []
student_count = 0
while True:
result1 = 'y'
r = 'y'
title_sys = '學生信息管理系統(tǒng)'
title_fun1 = '1 添加學生'
title_fun2 = '2 修改信息'
title_fun3 = '3 查看學生'
title_fun4 = '4 立即退出'
print(title_sys.center(50),end='\n\n')
print(title_fun1.center(50))
print(title_fun2.center(50))
print(title_fun3.center(50))
print(title_fun4.center(50))
print('本系統(tǒng)學生編號自動生成，根據(jù)登記次序為‘2018_xxx’')
print('='*50)
try:
order = int(input('請選擇要進行的操作：'))
if order == 1:
while result1 == 'y':
s_n = input('輸入學生姓名：')
s_a = input('輸入學生年齡：')
s_c = input('請為該生分配其班級：')
student_count += 1
student_name.append(s_n)
student_age.append(s_a)
student_class.append(s_c)
str_id = '2018_'+str(student_count).rjust(3,'0')
student_id.append(str_id)
print('添加成功')
result1 = input('是否繼續(xù)添加y/n：')
print('-'*50)
elif order == 2:
while r == 'y':
if len(student_id) != 0:
result2 = 'y'
flag = 1
print('可用于修改的學生id：',student_id)
updata_id = input('請輸入要修改學生的id：')
index = student_id.index(updata_id)
while result2 == 'y':
m1 = '請選擇修改項'
m2 = '1.學生姓名'
m3 = '2.學生年齡'
m4 = '3.分配班級'
m5 = '4.直接刪除'
print(m1.center(50),end='\n\n')
print(m2.center(50))
print(m3.center(50))
print(m4.center(50))
print(m5.center(50))
print('-'*50)
updata_order = int(input('您的選擇是：'))
if updata_order == 1:
student_name[index] = input('請輸入新名字：')
print('修改完畢')
elif updata_order == 2:
student_age[index] = input('請輸入新年齡：')
print('修改完畢')
elif updata_order == 3:
student_class[index] = input('請輸入新班級：')
print('修改完畢')
else:
flag = 0
del student_name[index]
del student_age[index]
del student_class[index]
del student_id[index]
print('刪除完畢')
if flag:
result2 = input('是否繼續(xù)修改該學生的信息 y/n：')
else:
result2 = 'n'
r = input('是否繼續(xù)修改學生信息 y/n：')
else:
print('無可修改項')
break
print('-'*50)
elif order == 3:
try:
for i in range(student_count):
print('學生id：%s 學生姓名：%s 學生年齡：%s 學生班級：%s'%(student_id[i],student_name[i],student_age[i],student_class[i]))
except:
print('無記錄')
print('-'*50)
else:
break
except:
continue
結(jié)果如下（部分）：
image.png
