if else statement with button in tkinter-CodePudding

i am working on quiz game project i finished almost everything but i have to calc the scores for every question but i don't know how to use conditional statement with buttons like if button_selected is A then mark obtained is 1 finally the program calc all the marks and print "your total marks is 85%"

below is a part of my code (questions):

q1 = Label(win1, text="What is the main memory in computer?: ", font="Times 20", bg="white")
q1.pack()
q1.place(x=0, y=40)

button1 = Button(win1, text="A. Dynamic RAM ", font="Times 17", fg="blue",variable=radio,value=1 ,command=selection)# true
button1.place(x=0, y=80)

button2 = Button(win1, text=" B. Static RAM ", font="Times 17", variable=radio,value=0 ,fg="blue", command=selection)
button2.place(x=0, y=120)

button3 = Button(win1, text=" C. ROM ", font="Times 17", fg="blue",variable=radio,value=1 , command=selection)
button3.place(x=0, y=160)

button4 = Button(win1, text=" D. Register", font="Times 17", fg="blue",variable=radio,value=1 ,command=selection)
button4.place(x=0, y=200)

CodePudding user response：

There are no attributes like variable and value for a Button in Tkinter. Just pass the option chosen as an argument with the function selection with each button's command (for that you can use lambda.)

In the function selection, check for correct answers and update the score.

from tkinter import *

win1 = Tk()
win1.geometry("600x500")

score=0
def selection(optionChose):
    global score
    if optionChose == 'A':
        score =1
    else:
        score =0 #can also do negative marking for wrong 
    print(score)
    
q1 = Label(win1, text="What is the main memory in computer?: ", font="Times 20", bg="white")
q1.pack()
q1.place(x=0, y=40)

button1 = Button(win1, text="A. Dynamic RAM ", font="Times 17", fg="blue" ,command=lambda:selection('A'))# true
button1.place(x=0, y=80)

button2 = Button(win1, text=" B. Static RAM ", font="Times 17",fg="blue", command=lambda:selection('B'))
button2.place(x=0, y=120)

button3 = Button(win1, text=" C. ROM ", font="Times 17", fg="blue", command=lambda:selection('C'))
button3.place(x=0, y=160)

button4 = Button(win1, text=" D. Register", font="Times 17", fg="blue",command=lambda:selection('D'))
button4.place(x=0, y=200)

win1.mainloop()

For building a better version using Radiobuttons as options instead of Buttons, refer to MCQ Quiz Game using Tkinter (JSON data will be used to extract the question & answers from.)

CodePudding user response：

The usual way to do this is to pass an argument from the button to the callback function. One way to do this is using a lambda function:

from tkinter import *

win1 = Tk()

q1 = Label(win1, text="What is the main memory in computer?: ")
q1.pack()

def selection(button):
    print(button)

button1 = Button(win1, text="A. Dynamic RAM ", command=lambda:selection('A'))
button1.pack()  #               Parameter passed to callback function ---^

button2 = Button(win1, text=" B. Static RAM ", command=lambda:selection('B'))
button2.pack()  #               Parameter passed to callback function ---^

win1.mainloop()