Table of contents
一、No such file or directory: 'flight.txt'
二、-tkinter.TclError: couldn't recognize data in image file "light.jpg"
def Delete(self) in class ADD:
statement
Based on a previous article - online airplane booking system python simulated airplane booking system_airplane booking system python_Hansu Luo Beiwan's blog-CSDN blog
Do some problem explanation, code analysis and system optimization here
Problem explanation
一、No such file or directory: 'flight.txt'
The reason for this situation should be that the txt file and the py file are not in the same root directory.
Solution: Put the txt file and py file in a folder
二、-tkinter.TclError: couldn't recognize data in image file "light.jpg"
The reason for this situation is that the tkinter library cannot recognize files in .jpg format
Solution: Change jpg to gif file, or use a library, such as PIL library
code analysis
The entire program defines 10 classes, namely
Flight category
class Train: # 定义一个航班类
def __init__(self):
self.ID = ''
self.firstname = ''
self.lastname = ''
self.time = ''
self.price = 0
self.seating = 0User class
class Users:
def __init__(self):
self.personID = ''
self.name = ''
self.ID = ''
self.time = ''
self.seating = 0Each of the remaining eight functional modules is a class. In each class, you can define the functions you need to write to jointly implement the functions of each module.
Explain a module
class ADD: # 信息录入
def Add_f(self):
roob = Toplevel(win)
roob.title('飞机信息输入')
roob.geometry('500x240')
lb1 = Label(roob, text='请输入航班号')
lb1.place(relx=0.1, rely=0.1, relwidth=0.5, relheight=0.1)
a_text = StringVar()
a_text.set("")
self.inp1 = Entry(roob, textvariable=a_text)
self.inp1.place(relx=0.6, rely=0.1, relwidth=0.3, relheight=0.1)
lb2 = Label(roob, text='请输入起点')
lb2.place(relx=0.1, rely=0.2, relwidth=0.5, relheight=0.1)
b_text = StringVar()
b_text.set("")
self.inp2 = Entry(roob, textvariable=b_text)
self.inp2.place(relx=0.6, rely=0.2, relwidth=0.3, relheight=0.1)
lb3 = Label(roob, text='请输入终点')
lb3.place(relx=0.1, rely=0.3, relwidth=0.5, relheight=0.1)
c_text = StringVar()
c_text.set("")
self.inp3 = Entry(roob, textvariable=c_text)
self.inp3.place(relx=0.6, rely=0.3, relwidth=0.3, relheight=0.1)
lb4 = Label(roob, text='请输入飞机起飞时间')
lb4.place(relx=0.1, rely=0.4, relwidth=0.5, relheight=0.1)
d_text = StringVar()
d_text.set("")
self.inp4 = Entry(roob, textvariable=d_text)
self.inp4.place(relx=0.6, rely=0.4, relwidth=0.3, relheight=0.1)
lb5 = Label(roob, text='请输入飞机的票价')
lb5.place(relx=0.1, rely=0.5, relwidth=0.5, relheight=0.1)
e_text = StringVar()
e_text.set("")
self.inp5 = Entry(roob, textvariable=e_text)
self.inp5.place(relx=0.6, rely=0.5, relwidth=0.3, relheight=0.1)
lb6 = Label(roob, text='请输入飞机的票数')
lb6.place(relx=0.1, rely=0.6, relwidth=0.5, relheight=0.1)
f_text = StringVar()
f_text.set("")
self.inp6 = Entry(roob, textvariable=f_text)
self.inp6.place(relx=0.6, rely=0.6, relwidth=0.3, relheight=0.1)
self.bt1 = Button(roob, text="清空数据", command=self.Delete)
self.bt1.place(relx=0.1, rely=0.9, relwidth=0.1, relheight=0.1)
self.bt = Button(roob, text="添加", command=lambda: self.Add(a_text, b_text, c_text, d_text, e_text, f_text))
self.bt.place(relx=0.7, rely=0.8, relwidth=0.2, relheight=0.1)
self.btClose = Button(roob, text='关闭', command=roob.destroy)
self.btClose.place(relx=0.7, rely=0.9, relwidth=0.2, relheight=0.1)
self.txt = Text(roob)
self.txt.place(relx=0.1, rely=0.8, relwidth=0.4, relheight=0.1)
def Delete(self):
self.inp1.delete(0, END)
self.inp2.delete(0, END)
self.inp3.delete(0, END)
self.inp4.delete(0, END)
self.inp5.delete(0, END)
self.inp6.delete(0, END)
def Add(self, ID, firstname, lastname, time, price, seating):
tra = Train()
tra.ID = str(ID.get())
tra.firstname = str(firstname.get())
tra.lastname = str(lastname.get())
tra.time = str(time.get())
tra.price = str(price.get())
tra.seating = str(seating.get())
print(tra.ID, tra.firstname, tra.lastname, tra.time, tra.price, tra.seating)
if self.searchByID(trainlist, tra.ID) == True:
self.txt.delete(1.0, END)
self.txt.insert(END, '航班重复,保存失败')
return
trainlist.append(tra)
file_object = open("train.txt", "a")
file_object.write(tra.ID)
file_object.write(" ")
file_object.write(tra.firstname)
file_object.write(" ")
file_object.write(tra.lastname)
file_object.write(" ")
file_object.write(tra.time)
file_object.write(" ")
file_object.write(tra.price)
file_object.write(" ")
file_object.write(tra.seating)
file_object.write("\n")
file_object.close()
self.txt.delete(1.0, END)
self.txt.insert(END, '保存成功')
return
def searchByID(self, trainlist, ID):
for item in trainlist:
if item.ID == ID:
return True
return False
def Add_f(self) in class ADD:
For example, in the class ADD module on line 58, def Add_f(self): can add information.
def Add_f(self):
roob = Toplevel(win)
roob.title('飞机信息输入')
roob.geometry('500x240')
lb1 = Label(roob, text='请输入航班号')
lb1.place(relx=0.1, rely=0.1, relwidth=0.5, relheight=0.1)
a_text = StringVar()
a_text.set("")
self.inp1 = Entry(roob, textvariable=a_text)
self.inp1.place(relx=0.6, rely=0.1, relwidth=0.3, relheight=0.1)
lb2 = Label(roob, text='请输入起点')
lb2.place(relx=0.1, rely=0.2, relwidth=0.5, relheight=0.1)
b_text = StringVar()
b_text.set("")
self.inp2 = Entry(roob, textvariable=b_text)
self.inp2.place(relx=0.6, rely=0.2, relwidth=0.3, relheight=0.1)
lb3 = Label(roob, text='请输入终点')
lb3.place(relx=0.1, rely=0.3, relwidth=0.5, relheight=0.1)
c_text = StringVar()
c_text.set("")
self.inp3 = Entry(roob, textvariable=c_text)
self.inp3.place(relx=0.6, rely=0.3, relwidth=0.3, relheight=0.1)
lb4 = Label(roob, text='请输入飞机起飞时间')
lb4.place(relx=0.1, rely=0.4, relwidth=0.5, relheight=0.1)
d_text = StringVar()
d_text.set("")
self.inp4 = Entry(roob, textvariable=d_text)
self.inp4.place(relx=0.6, rely=0.4, relwidth=0.3, relheight=0.1)
lb5 = Label(roob, text='请输入飞机的票价')
lb5.place(relx=0.1, rely=0.5, relwidth=0.5, relheight=0.1)
e_text = StringVar()
e_text.set("")
self.inp5 = Entry(roob, textvariable=e_text)
self.inp5.place(relx=0.6, rely=0.5, relwidth=0.3, relheight=0.1)
lb6 = Label(roob, text='请输入飞机的票数')
lb6.place(relx=0.1, rely=0.6, relwidth=0.5, relheight=0.1)
f_text = StringVar()
f_text.set("")
self.inp6 = Entry(roob, textvariable=f_text)
self.inp6.place(relx=0.6, rely=0.6, relwidth=0.3, relheight=0.1)
self.bt1 = Button(roob, text="清空数据", command=self.Delete)
self.bt1.place(relx=0.1, rely=0.9, relwidth=0.1, relheight=0.1)
self.bt = Button(roob, text="添加", command=lambda: self.Add(a_text, b_text, c_text, d_text, e_text, f_text))
self.bt.place(relx=0.7, rely=0.8, relwidth=0.2, relheight=0.1)
self.btClose = Button(roob, text='关闭', command=roob.destroy)
self.btClose.place(relx=0.7, rely=0.9, relwidth=0.2, relheight=0.1)
self.txt = Text(roob)
self.txt.place(relx=0.1, rely=0.8, relwidth=0.4, relheight=0.1)label function
The following lines of code are used to set the buttons on the interface using the label function. For specific methods of using the label function, please see Python Tkinter Detailed Explanation (2) Use of Label Labels_label in python_Maker Teacher Apple's Blog-CSDN Blog
lb1 = Label(roob, text='请输入航班号')
lb1.place(relx=0.1, rely=0.1, relwidth=0.5, relheight=0.1)
a_text = StringVar()
a_text.set("")
self.inp1 = Entry(roob, textvariable=a_text)
self.inp1.place(relx=0.6, rely=0.1, relwidth=0.3, relheight=0.1)By analogy, the following buttons are all implemented by the label function
layout button
lb1.place(relx=0.1, rely=0.1, relwidth=0.5, relheight=0.1)This line of code is for laying out buttons. For specific relwidth and the like, please see Tkinter Layout Manager (detailed explanation of three methods) (biancheng.net)
def Delete(self) in class ADD:
def Delete(self):
self.inp1.delete(0, END)
self.inp2.delete(0, END)
self.inp3.delete(0, END)
self.inp4.delete(0, END)
self.inp5.delete(0, END)
self.inp6.delete(0, END)Just use the delete function for this. For details, see Text.delete_tkinter text delete_WeChat-Alipay's blog-CSDN blog in tkinter programming in #Python3
Others can be deduced in this way