Restart Function In Python

I am trying to make a restart function, so that when you have the answer of the function you can choose to get a new answer with new numbers or just close it. i tried with def main

Solution 1:

You should put all the code you want to repeat in a while loop.

#import required modula#import math#from math import sin, piimport math

#list for answers 
yeslist = ["yes", "y", "yeah" , "oke"]
#function to calculate x**3deff(x):
    u = x**3return(u)
    #return math.sqrt(x) #function #Function#function for taking positive integer onlydefpositiveinput(message):
    whileTrue:
        try:
            u= int(input(message))
            if u<= -1:
                raise ValueError
            #return the value of uelif u>=0:
                return u
            breakexcept ValueError:
            print("oops!! That was no valid number. Try again... ")

restart = "yes"while restart in yeslist:
    a = positiveinput("What is the lowerlimit?:") #2

    b = positiveinput("What is the upperlimit?:") #6

    n = positiveinput("How many division intervals do you want?:")


    #formula to calculate dx
    dx = float ((b-a)/n)
    xi = a;
    Sum = 0;
    for i inrange(n):
        xi = xi+dx
        Sum = Sum + f(xi)
        #to get only the answer instead of (n * answers)if i==n-1:
            print("The surface under the line is %.2f"%(Sum*dx))

            restart = input("do you want to start again")

exit()

Solution 2:

to repeat a process you want to follow this general framework.

1. define your desired/acceptable responses
2. set your input variable to something in your accepted responses
3. start a loop while your input variable is in your responses
4. inside the loop do your process
5. last thing in you loop, get input from the user to use for determining whether to continue.

    yeslist = ['y','yes','more']
    continue = 'y'whilecontinuein yeslist:
        '''do your process here'''continue = input("another?")

Solution 3:

Try doing this:

import os
import sys

def restart():
    os.execl(sys.executable, sys.executable, *sys.argv)

And every time you want to restart run the function restart().

Solution 4:

Some things first:

1. You dont need ; in Python
2. You dont need the brakets when doing a return

---

Its simple, you can just put the "main" program in a while Loop and break if you want to leave.

One problem: You have 2 loops now (while and for). So what I did is added a boolean (do_break). If its true, the game ends:

# imports, functions and so on herewhileTrue:
    a = positiveinput("What is the lowerlimit? ")  # 2
    b = positiveinput("What is the upperlimit? ")  # 6
    n = positiveinput("How many division intervals do you want? ")

    do_break = False# formula to calculate dx
    dx = float((b - a) / n)
    xi = a
    Sum = 0for i inrange(n):
        xi = xi + dx
        Sum = Sum + f(xi)
        # to get only the answer instead of (n * answers)if i == n - 1:
            print("The surface under the line is %.2f" % (Sum * dx))

            restart = input("Do you want to start again? ")
            ifnot restart in yeslist:
                # if your input is NOT in yeslist, break
                do_break = Truebreak# Leave the for loop# If its breaked it now continues hereif do_break:
        break# Break again to leave while loop too

---

Edit:

I would NOT recommend doing it with functions, because of recursion!