Tkinter: Calling function when button is pressed but i am getting attribute error 'Application&-CodePudding

from tkinter import *
import sqlite3
conn = sqlite3.connect('database.db')
c = conn.cursor()


class Application:
    def __init__(self, master):
        self.master = master

        self.left = Frame(master, width=800, height=720, bg='lightgreen')
        self.left.pack(side=LEFT)

        self.right = Frame(master, width=400, height=720, bg='lightblue')
        self.right.pack(side=RIGHT)
        self.heading=Label(self.left,text="HM hospital Appointments",font=('arial 40 bold'),fg='white',bg='lightgreen')
        self.heading.place(x=0,y=0)

        self.name=Label(self.left,text="Patient Name",font=('arial 20 italic'),fg='black',bg='lightgreen')
        self.name.place(x=0,y=100)
        self.age=Label(self.left,text="Age",font=('arial 20 italic'),fg='black',bg='lightgreen')
        self.age.place(x=0,y=150)
        self.gender=Label(self.left,text="Gender",font=('arial 20 italic'),fg='black',bg='lightgreen')
        self.gender.place(x=0,y=200)
        self.location=Label(self.left,text="Location",font=('arial 20 italic'),fg='black',bg='lightgreen')
        self.location.place(x=0,y=250)
        self.time=Label(self.left,text="Appointment Time",font=('arial 20 italic'),fg='black',bg='lightgreen')
        self.time.place(x=0,y=300)
        self.name_ent=Entry(self.left,width=30)
        self.name_ent.place(x=250,y=110)
        self.age_ent=Entry(self.left,width=30)
        self.age_ent.place(x=250,y=160)
        self.gender_ent=Entry(self.left,width=30)
        self.gender_ent.place(x=250,y=210)
        self.location_ent=Entry(self.left,width=30)
        self.location_ent.place(x=250,y=260)
        self.time_ent=Entry(self.left,width=30)
        self.time_ent.place(x=250,y=310)
        self.submit=Button(self.left,text="Add appointment",width=20,height=2,bg='steelblue',command=self.hi)
        self.submit.place(x=300,y=350)
                
        def hi(self):
            self.val1=self.name_ent.get()
            

root = Tk()
b = Application(root)

root.geometry("1200x720 0 0")

root.resizable(False, False)

root.mainloop()

I looked many videos to solve it but can't find the right one so please help me.

CodePudding user response：

To fix the error you are seeing, you need to move the definition of the hi function inside the Application class and not inside __init__, like this:

class Application:
    def __init__(self, master):
        # code for the rest of the __init__ method

        self.submit=Button(self.left,text="Add appointment",width=20,height=2,bg='steelblue',command=self.hi)

    ...
    ...
    def hi(self):
        self.val1=self.name_ent.get()