python实现简单成绩录入系统
学了一个多月的python，做了一个小程序：python实现简单成绩录入系统，实验一下
menu部分
from tkinter import*#这是一个python模块，python3中都有
import tkinter.messagebox#这也是一个模块
from file_read import read
from file_write import write
class student_main():#定义一个学生类
def __init__(self):
self.name =''
self.ID=''
self.lessons={}
self.sum=''
self.average=''
stulist=read()
stu=student_main()
#登录页面--------------------------------------------------------------------
def seacharID(stulist,ID):#这是一个对是否重复id的检验
for x in stulist:
if x.ID==ID:
return True
#这是一个成绩录入时的主要函数
def next():
root_next=Tk()
root_next.title('成绩录入')
root_next.geometry('200x200+230+330')
var_lesson=StringVar()
var_score=StringVar()
Label(root_next,text='课程名').place(x=20,y=50)
Label(root_next,text='成绩').place(x=20,y=90)
enter_lesson=Entry(root_next,textvariable=var_lesson,width=15)
enter_lesson.place(x=70,y=50)
enter_score=Entry(root_next,textvariable=var_score,width=15)
enter_score.place(x=70,y=90)
def btn3_login():
x=var_lesson.get()
y=var_score.get()
if y.isdigit()==True:
if int(y)>100:
tkinter.messagebox.showerror('错误','请输入正确的成绩！！！')
var_score.set('')
elif int(y)<0:
tkinter.messagebox.showerror('错误','请输入正确的成绩！！！')
var_score.set('')
else:
stu.lessons[x]=y
root_next.destroy()
next()
else:
tkinter.messagebox.showwarning('提示','请输入数字')
def btn4_login():
x=var_lesson.get()
y=var_score.get()
stu.lessons[x]=y
tkinter.messagebox.showinfo('录入成功')
root_next.destroy()
btn3=Button(root_next,text='录入新学科',bg='#5EAEFF',bd=0,command=btn3_login)
btn3.place(y=130,width=99,height=20)
btn4=Button(root_next,text='完成',bg='#FF6868',bd=0,command=btn4_login)
btn4.place(x=101,y=130,width=99,height=20)
#页面循环
root_next.mainloop()
#核心函数
def entry():
root_e=Tk()
root_e.title("增")
root_e.geometry('200x200+230+330')
var_user=StringVar()
var_ID=StringVar()
Label(root_e,text='姓名').place(x=20,y=50)
Label(root_e,text='ID').place(x=20,y=90)
enter_user=Entry(root_e,textvariable=var_user,width=15)
enter_user.place(x=70,y=50)
enter_user.focus()
enter_ID=Entry(root_e,textvariable=var_ID,width=15)
enter_ID.place(x=70,y=90)
def btn1_login():
x=var_user.get()
y=var_ID.get()
pop=seacharID(stulist,y)
if pop==True:
tkinter.messagebox.showwarning('错误','该学号已存在')
var_ID.set("")
var_user.set("")
else:
if y.isdigit()==True:
conunt=0
sum_opp=0
stu.name=x
stu.ID=y
root_e.destroy()
next()
for x in stu.lessons.values():
sum_opp=sum_opp+int(x)
conunt+=1
stu.sum=str(sum_opp)
average_opp=int(stu.sum)/conunt
stu.average=str(average_opp)
stulist.append(stu)
write(stulist)
menu()
else:
tkinter.messagebox.showwarning('提示','您输入了非数字的内容')
var_ID.set(" ")
def btn2_login():
root_e.destroy()
menu()
btn1=Button(root_e,text='下一步',command=btn1_login,bd=0,bg='Silver')
btn1.place(y=140,width=99,height=20)
btn2=Button(root_e,text='取消',command=btn2_login,bd=0,bg='Silver')
btn2.place(x=100,y=140,width=99,height=20)
root_e.mainloop()
#删除页面------------------------------------------------------------------
def deling():
root=Tk()
root.title('删')
root.geometry('200x200+230+330')
Label(root,text='学号').place(x=40,y=50)
def btn_ok():
x=var_del.get()
if x.isdigit()==True:
count=0
for i in stulist:
if i.ID==x:
stulist.remove(i)
write(stulist)
tkinter.messagebox.showinfo("提示",'成功删除该学生信息')
root.destroy()
menu()
else:
count+=1
if count==len(stulist):
tkinter.messagebox.showinfo(title='错误',message='不存在该账户！')
var_del.set('')
else:
tkinter.messagebox.showerror('警告','请输入数字')
def btn_cancel():
x=tkinter.messagebox.askokcancel('提示','确定离开？')
if x==True:
root.destroy()
menu()
var_del=StringVar()
entry_del=Entry(root,textvariable=var_del,width=10)
entry_del.place(x=80,y=50)
btn1=Button(root,bd=0,bg='Silver',command=btn_ok,text='确定')
btn1.place(y=110,width=99,height=20)
btn2=Button(root,bd=0,bg='Silver',command=btn_cancel,text='取消')
btn2.place(x=101,y=110,width=99,height=20)
root.mainloop()
#修改页面---------------------------------------------------------------
def change():
root=Tk()
root.title("改")
root.geometry('200x200+230+330')
Label(root,text='学号').place(x=40,y=50)
var_change=StringVar()
entry_change=Entry(root,textvariable=var_change,width=10)
entry_change.place(x=80,y=50)
def var_ok():
x=var_change.get()
if x.isdigit()==True:
counton=0
for i in stulist:
if x==i.ID:
stulist.remove(i)
write(stulist)
root.destroy()
entry()
else:
counton+=1
if counton==len(stulist):
tkinter.messagebox.showerror('错误','不存在该账户！')
else:
tkinter.messagebox.showerror('警告','输入数字ID')
def var_cancel():
x=tkinter.messagebox.askokcancel('提示','确定离开')
if x==True:
root.destroy()
btn1=Button(root,bd=0,bg='Silver',command=var_ok,text='确定')
btn1.place(y=110,width=99,height=20)
btn2=Button(root,bd=0,bg='Silver',command=var_cancel,text='取消')
btn2.place(x=101,y=110,width=99,height=20)
root.mainloop()
#查询页面------------------------------------------------------------------
def next_i(x):
window=Tk()
window.title('显示信息')
window.geometry('400x200')
counton=0
for i in stulist:
if i.ID==x:
ai_name=i.name
ai_ID=i.ID
ai_lesson=str(i.lessons)
ai_sum=i.sum
ai_ave=i.average
else:
ai_name=' '
ai_ID=' '
ai_lesson='该学号不存在'
ai_sum=' '
ai_ave=' '
Label(window,height=2,width=8,text=ai_name).pack()
Label(window,height=2,width=8,text=ai_ID).pack()
Label(window,height=2,width=100,text=ai_lesson).pack()
Label(window,height=2,width=8,text=ai_sum).pack()
Label(window,height=2,width=8,text=ai_ave).pack()
window.mainloop()
def search():
root=Tk()
root.title('')
root.geometry('200x200+230+330')
Label(root,text='学号').place(x=40,y=50)
def btn_ok():
x=var_display.get()
if x.isdigit()==True:
next_i(x)
else:
tkinter.messagebox.showerror('警告','请输入数字ID')
def btn_cancel():
root.destroy()
menu()
var_display=StringVar()
entry_display=Entry(root,textvariable=var_display,width=10)
entry_display.place(x=80,y=50)
btn1=Button(root,bd=0,bg='Silver',command=btn_ok,text='确定')
btn1.place(y=110,width=99,height=20)
btn2=Button(root,bd=0,bg='Silver',command=btn_cancel,text='返回主菜单')
btn2.place(x=101,y=110,width=99,height=20)
root.mainloop()
#排序页面--------------------------------------------------------------
def display(x):
window=Tk()
window.title()
contunt=0
for i in x:
contunt+=1
all_list=['第'+str(contunt)+'名：']
all_list.append('姓名：'+i.name+'\\')
all_list.append('学号：'+i.ID+'\\')
for m,n in i.lessons.items():
all_list.append(m+":")
all_list.append(n)
all_list.append('\\')
all_list.append('总分：'+i.sum+'\\')
all_list.append('平均分：'+i.average)
Label(window,bd=20,text=all_list).pack()
window.mainloop()
def sorting():
for i in range(len(stulist)-1):
for j in range(i+1,len(stulist)):
temp=student_main()
if stulist[i].average<stulist[j].average:
temp=stulist[i]
stulist[i]=stulist[j]
stulist[j]=temp
display(stulist)
#菜单------------------------------------------------------
def menu():
root=Tk()
root.title('主视面')
root.geometry('250x300+150+100')
def var_one():
root.destroy()
entry()
def var_two():
root.destroy()
deling()
def var_three():
root.destroy()
change()
def var_four():
root.destroy()
search()
def var_five():
sorting()
def var_six():
root.destroy()
var0=Label(root,text='--------------菜单--------------',font=('Arial',13),width=30,height=1)
var0.pack()
var1=Button(root,text='1.添加界面',bg='Silver',font=('Arial',12),width=20,height=1,bd=0,command=var_one)
var1.pack(pady=4)
var2=Button(root,text='2.删除界面',bg='Silver',font=('Arial',12),width=20,height=1,bd=0,command=var_two)
var2.pack(pady=4)
var3=Button(root,text='3.更改界面',bg='Silver',font=('Arial',12),width=20,height=1,bd=0,command=var_three)
var3.pack(pady=4)
var4=Button(root,text='4.查询界面',bg='Silver',font=('Arial',12),width=20,height=1,bd=0,command=var_four)
var4.pack(pady=4)
var4=Button(root,text='5.成绩排序',bg='Silver',font=('Arial',12),width=20,height=1,bd=0,command=var_five)
var4.pack(pady=4)
var6=Button(root,text='退出',bg='Silver',font=('Arial',12),width=20,height=1,bd=0,command=var_six)
var6.pack(pady=4)
root.mainloop()
menu()
file_read模块部分
（file_read主要是将我储存在txt文件中的数据转化成stulist列表，来进行检验，防止录入同一个id）
class student_main():
def __init__(self):
self.name =''
self.ID=''
self.lessons={}
self.sum=''
self.average=''
def read():
stulist=[]
x=[]
f=open('all_student.txt','r')
t=open('all_lesson.txt','r')
line=f.readlines()
lene=t.readlines()
for i in range(len(line)):
if (i+1)%2==1:#这里主要是读取和储存是出现了莫名的空行，我只好多录入一个空行好方便读取
y=student_main()
x=line[i].split(" ")
y.name=x[0]
y.ID=x[1]
j=int((i+1)/2)
z=eval(lene[j])
y.lessons=z
y.sum=x[2]
y.average=x[3]
stulist.append(y)
return stulist
file_write模块部分
（主要是将menu中获得的数据进行储存）
class student_main():
def __init__(self):
self.name =''
self.ID=''
self.lessons={}
self.sum=''
self.average=''
def write(stulist):
f=open('all_student.txt','w')
for i in stulist:
f.write(i.name+' '+i.ID+' '+i.sum+' '+i.average)
f.write('\n')
f.close()
t=open('all_lesson.txt','w')
for i in stulist:
t.write(str(i.lessons))
t.write('\n')
t.close()
还要自己建立两个TXT文本，一个叫all_lesson.txt，另一个叫all_student.txt。
因为student类中的lesson是用字典储存的，我实在找不到怎么把他完整的读出来的语句只好分开存储了。
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