python学生管理系统
学生管理系统（Python，无文件版）
1. 由于这段代码是用列表和字典存储的，没有用到文件，无法保存数据，
所以每次需要重新输入数据
2.本系统有添加学生、删除学生、修改学生信息、查询学生信息、显示所有学生信息功能
存储列表
Infomation =[]
系统界面函数
#系统界面函数
def System():
print('-' * 30)
print("Welcome to the Student Management System")
print("Please select the feature you want to operate:")
print('-' * 30)
#1.添加学生信息 2。删除学生信息 3.修改学生信息 4.查询学生信息 5.显示全部学生信息 6.退出系统
print("1.Add student information")
print("2.Delete student information")
print("3.Modify student information ")
print("4.Query student information")
print("5.Show all student information")
print("6.Exit the system")
print('-' * 30)
添加学生函数
#添加学生信息函数
def add():
#输入添加人数
num = int(input("Please enter the number of added:"))
while(num):
#声明全局变量Infomation
global Infomation
#输入学生信息
sname = input("Enter the student's name:")
sno = input("Enter the student number:")
age = input("Enter the student's age:")
sex = input("Enter the gender of the student:")
telephone = input("Enter the student's telephone:")
cls = input("Enter the student class:")
#检查学生信息是否已经存在，若存在退出循环
for i in Infomation:
if sno == i['sno']:
print("The student already exists!")
return
#学生信息不存在，将学生信息追加到列表中
Infomation_dict = {}
Infomation_dict['sname'] = sname
Infomation_dict['sno'] = sno
Infomation_dict['age'] = age
Infomation_dict['sex'] = sex
Infomation_dict['telephone'] = telephone
Infomation_dict['cls'] = cls
Infomation.append(Infomation_dict)
print(Infomation)
print("\n")
num-=1
删除学生信息（会删除所有与输入内容相同的学生）
#删除内容编号
def Delete_num():
print('-' * 30)
print("1.Delete by sname")
print("2.Delete by sno")
print("3.Delete by age")
print("4.Delete by sex")
print("5.Delete by telephone")
print("6.Delete by class")
print("7.exit")
print('-' * 30)
在#删除学生信息函数
def delete():
while True:
global Infomation
Delete_num()
num = int(input("Please select the feature you want to operate:"))
#按名字删除（删除所有与输入的名称相同的学生）
if num == 1:
sname = input("Please enter the name you want to delete:")
#判断学员是否存在
for i in Infomation:
if sname == i['sname']:
Infomation.remove(i)
print("Delete succeeded!")
else:
print("The student does not exist!")
n = int(input("Continue to delete? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#按学号删除
elif num == 2:
sno = input("Please enter the number you want to delete:")
# 判断学员是否存在
for i in Infomation:
if sno == i['sno']:
Infomation.remove(i)
print("Delete succeeded!")
else:
print("The student does not exist!")
n = int(input("Continue to delete? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#按年龄删除
elif num == 3:
age = input("Please enter the age you want to delete:")
# 判断学员是否存在
for i in Infomation:
if age == i['age']:
Infomation.remove(i)
print("Delete succeeded!")
else:
print("The student does not exist!")
n = int(input("Continue to delete? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#按性别删除
elif num == 4:
sex = input("Please enter the sex of student you want to delete:")
# 判断学员是否存在
for i in Infomation:
if sex == i['sex']:
Infomation.remove(i)
print("Delete succeeded!")
else:
print("The student does not exist!")
n = int(input("Continue to delete? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#按电话号码删除
elif num == 5:
telephone = input("Please enter the telephone of student you want to delete:")
# 判断学员是否存在
for i in Infomation:
if telephone == i['telephone']:
Infomation.remove(i)
print("Delete succeeded!")
else:
print("The student does not exist!")
n = int(input("Continue to delete? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#按班级删除
elif num == 6:
cls = input("Please enter the class of student you want to delete:")
# 判断学员是否存在
for i in Infomation:
if cls == i['cls']:
Infomation.remove(i)
print("Delete succeeded!")
else:
print("The student does not exist!")
n = int(input("Continue to delete? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
elif num == 7:
return
else:
print("Input error，please re-enter!")
修改学生信息
#修改内容序号
def Modify_num():
print('-' * 30)
print("1.Modify sname")
print("2.Modify sno")
print("3.Modify age")
print("4.Modify sex")
print("5.Modify telephone")
print("6.Modify class")
print("7.exit")
print('-' * 30)
#修改学生信息
def modify():
#输入要修改学生的学号
sno = input("Please enter the student number to be modified:")
global Infomation
#判断学生是否存在
for i in Infomation:
if sno == i['sno']:
while True:
Modify_num()
num = int(input("Please select the feature you want to operate:"))
#修改姓名
if num == 1:
i['sname'] = input("Please enter a new name:")
print("Modity succeeed!")
print(Infomation)
n = int(input("Continue to modify? Press any number to continue,Press 0 to exit:"))
if(n == 0):
print(Infomation)
return
#修改学号
elif num == 2:
new_sno = input("Please enter a new student number:")
#保证学号的唯一性
for j in Infomation:
if new_sno == j['sno']:
print("Student number already exists,Please reselect")
break
else:
j['sno'] = new_sno
print("Modity succeeed!")
print(Infomation)
n = int(input("Continue to modify? Press any number to continue,Press 0 to exit:"))
if(n == 0):
print(Infomation)
return
#修改年龄
elif num == 3:
i['age'] = input("Please enter new age:")
print("Modity succeeed!")
print(Infomation)
n = int(input("Continue to modify? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#修改性别
elif num == 4:
i['sex'] = input("Please enter new sex:")
print("Modity succeeed!")
print(Infomation)
n = int(input("Continue to modify? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#修改电话号码
elif num == 5:
i['telephone'] = input("Please enter a new telephone:")
print("Modity succeeed!")
print(Infomation)
n = int(input("Continue to modify? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
#修改班级
elif num == 6:
i['cls'] = input("Please enter a new class:")
print("Modity succeeed!")
print(Infomation)
n = int(input("Continue to modify? Press any number to continue,Press 0 to exit:"))
if (n == 0):
print(Infomation)
return
elif num == 7:
return
else:
print("Input error，please re-enter!")
else:
print("The student does not exist!")
查询学生信息
#查询内容序号
def Query_num():
print('-' * 30)
print("1.Query by name")
print("2.Query by sno")
print("3.Query by age")
print("4.Query by sex")
print("5.Query by telephone")
print("6.Query by class")
print("7.exit")
print('-' * 30)
#查询学生信息函数
def query():
while True:
Query_num()
num = int(input("Please enter the query method serial number:"))
#按姓名查询
if num == 1:
name = input("Please enter the name of the student:")
for i in Infomation:
if name == i['sname']:
print("The student's information is as follows:")
print(f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
else:
print("The student does not exist!")
n = int(input("Continue to query? Press any number to continue,Press 0 to exit:"))
if (n == 0):
return
#按学号查询
elif num == 2:
sno = input("Please enter the number of the student:")
for i in Infomation:
if sno == i['sno']:
print("The student's information is as follows:")
print(f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
else:
print("The student does not exist!")
n = int(input("Continue to query? Press any number to continue,Press 0 to exit:"))
if (n == 0):
return
#按年龄查询
elif num == 3:
age = input("Please enter the age of the student:")
for i in Infomation:
if age == i['age']:
print("The student's information is as follows:")
print(f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
else:
print("The student does not exist!")
n = int(input("Continue to query? Press any number to continue,Press 0 to exit:"))
if (n == 0):
return
#按性别查询
elif num == 4:
sex = input("Please enter the sex of the student:")
for i in Infomation:
if sex == i['sex']:
print("The student's information is as follows:")
print(f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
else:
print("The student does not exist!")
n = int(input("Continue to query? Press any number to continue,Press 0 to exit:"))
if (n == 0):
return
#按电话号码查询
elif num == 5:
telephone = input("Please enter the telephone of the student:")
for i in Infomation:
if telephone == i['telephone']:
print("The student's information is as follows:")
print(f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
else:
print("The student does not exist!")
n = int(input("Continue to query? Press any number to continue,Press 0 to exit:"))
if (n == 0):
return
#按班级查询
elif num == 6:
cls = input("Please enter the class of the student:")
for i in Infomation:
if cls == i['cls']:
print("The student's information is as follows:")
print(f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
else:
print("The student does not exist!")
n = int(input("Continue to query? Press any number to continue,Press 0 to exit:"))
if (n == 0):
return
elif num == 7:
return
else:
print("Input error，please re-enter!")
显示所有学生信息
#显示所有学生信息
def all():
print("All student information is as follows:")
for i in Infomation:
print( f"The student's name is {i['sname']},sno is {i['sno']},age is {i['age']},sex is {i['sex']},telephone is {i['telephone']},class is {i['cls']}")
主程序
while True:
System()
num = int(input("Input the num of operate:"))
if num == 1:
add()
elif num == 2:
delete()
elif num == 3:
modify()
elif num == 4:
query()
elif num == 5:
all()
elif num == 6:
exit = int(input("Are you sure you want to exit? 1.yes 2.no:"))
if exit == 1:
break
else:
print("Input error，please re-enter!")
界面展示
主界面
