Python, Explain def function and scoring system? -

can explain piece of code allow me understand def functions better, need know how code below acts counter , adds score @ end of test,:

for in range(questions): #ask 10 questions if quiz():     score +=1 

this code test created, if can explained alot, can maybe give alternative version of piece of code, whole code below :

import random import math import operator op   name = input("what name? ") print("hi {}! welcome arithmetic quiz...".format(name))   score = 0 questions = 10  def quiz():     x = random.randint(1, 10)     y = random.randint(1, 10)      ops = {'+': op.add,'-': op.sub,'*': op.mul}       keys = list(ops.keys())      opt = random.choice(keys)       operation = ops[opt]        answer = operation(x, y)      print ("what {} {} {}?".format(x, opt, y)) #prints question     user_answer= int(input("your answer: ")) #prompts users answer      if user_answer != answer: #validate users answer correct answer         print ("incorrect. right answer is",answer"")         return false     else:         print("correct!")         return true  in range(questions): #ask 10 questions     if quiz():         score +=1 #counter   print("{}: got {}/{} questions correct.".format(name, score, questions,))#'question' if (score==1) else 'questions' 

thanks <3

i need know how code @ top of page allows counter add correct answers in quiz

formatting matters in python, take care:

for in range(questions): #ask 10 questions     if quiz():         score +=1 

quiz() gets called 10 times, , returns true if question answered correctly. in case, variable score incremented.