主界面
def main_interface():
return print("""
*****欢迎进入千峰学生管理系统****
* 1.添加学生 *
* 2.删除学生 *
* 3.修改信息 *
* 4.查找信息 *
* 5.退出系统 *
******************************
""")
学生管理系统
# 1.添加学生
def add_student():
Students_table = []
while True:
with open('./student.txt', 'r', encoding='utf-8') as f:
content = f.read()
# print(eval(content))
# f = open('./student.txt', 'r', encoding='utf-8')
# f.read(str(student) + '\n')
# f.close()
name1 = input('请输入学生姓名：')
age1 = input('请输入学生年龄：')
tel1 = input('请输入学生电话：')
student = {'name':name1,'age':age1,'tel': tel1}
Students_table.append(student)
with open('./student.txt', 'w', encoding='utf-8') as f:
content = f.write(str(Students_table))
# f = open('./student.txt', 'a', encoding='utf-8')
# f.write(str(student) + '\n')
# f.close()
print('添加成功')
print('==============================')
print('1.继续添加')
print('2.返回上一级')
print('==============================')
number2 =int (input('请选择：'))
if number2 == 1:
continue
else:
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
break
# 2.删除学生
def del_student():
while True:
with open('./student.txt', 'r', encoding='utf-8') as f:
Students_table = eval(f.read())
print(Students_table)
name2 = input('请输入需要删除学生的姓名：')
for student in Students_table:
if student['name'] == name2:
Students_table.remove(student)
print(Students_table)
print('==============================')
with open('./student.txt', 'w', encoding='utf-8') as f:
content = f.write(str(Students_table))
print('删除成功')
print('==============================')
print('1.继续删除')
print('2.退出')
print('==============================')
number2 = int(input('请选择：'))
if number2 == 1:
print('==============================')
continue
else:
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
break
# 3.修改信息
def recompose_student():
while True:
with open('./student.txt', 'r', encoding='utf-8') as f:
Students_table = eval(f.read()) # 从文件中取出的数据赋值个一个列表
print(Students_table)
name_gai = input('请输入要修改的姓名：')
for student in Students_table:
if student['name'] == name_gai:
print('=============================')
print(student)
print('==============================')
print('1.修改姓名')
print('2.修改年龄')
print('3.修改电话')
print('==============================')
number3 = int(input('请选择:'))
print('==============================')
if number3 == 1:
name3 = input('请输入修改后的姓名：')
print('============================')
student['name'] = name3
elif number3 == 2:
age3 = input('请输入修改后的年龄：')
print('============================')
student['age'] = age3
else:
tel3 = input('请输入修改后的电话：')
print('============================')
student['tel'] = tel3
print(Students_table)
with open('./student.txt', 'w', encoding='utf-8') as f:
content = f.write(str(Students_table))
print('==============================')
print('修改成功')
print('==============================')
print('1.继续修改')
print('2.退出')
print('==============================')
number3 = int(input('请选择：'))
if number3 == 1:
continue
else:
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
break
# 4.查找信息
def find_student():
while True:
with open('./student.txt', 'r', encoding='utf-8') as f:
Students_table = eval(f.read()) # 从文件中取出的数据赋值个一个列表
print('1.按姓名查找')
print('2.按年龄查找')
print('3.按电话查找')
print('==============================')
number4 = int(input('请选择：'))
print('==============================')
if number4 == 1:
name4 = input('请输入查找的学生姓名：')
print('==============================')
for student in Students_table:
if student['name'] == name4:
print(student)
print('==============================')
print('1.继续查找')
print('2.退出')
print('==============================')
number4 = int(input('请选择：'))
if number4 == 1:
continue
else:
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
break
elif number4 == 2:
age4 = input('请输入查找学生的年龄：')
print('==============================')
for student in Students_table:
if student['age'] == age4:
print(student)
print('==============================')
print('1.继续查找')
print('2.退出')
print('==============================')
number4 = int(input('请选择：'))
if number4 == 1:
continue
else:
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
break
else:
tel4 = input('请输入查找学生的电话：')
print('==============================')
for student in Students_table:
if student['tel'] == tel4:
print(student)
print('==============================')
print('1.继续查找')
print('2.退出')
print('==============================')
number4 = int(input('请选择：'))
if number4 == 1:
continue
else:
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
break
运行系统
main_interface()
option_number = int(input('请选择：'))
if option_number == 1:
add_student()
elif option_number == 2:
del_student()
elif option_number == 3:
recompose_student()
elif option_number == 4:
find_student()
else:
print('欢迎下次使用')
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