why is my zero exception not working?

#input

. Enter choice(1/2/3/4/5/6 or q):4

lower range variable-100

higher range variable100

first variable0

Enter your second variable40

Enter problem string like this, N1,N2,and Operator, 2,2,+

the quotient of: 0 / 40 = 0.0 Would like to try again? y for yes!

#code

from mylib import Operators

def IsInRange(low_range, high_range, number):

if number <= low_range:

return False

elif number >= high_range:

return False

else:

return True

def Menu():

print("Select Operation.")

print("1.Addition")

print("2.Subtraction")

print("3.Multiply")

print("4.Divide")

print("5.scalc")

print("6.All in one")

print(" ")

def main():

obj = Operators()

Menu()

choice = input("Enter choice(1/2/3/4/5/6 or q):")

try:

low_range = int(input("lower range variable"))

high_range= int(input("higher range variable"))

var1 = int(input("first variable"))

while not IsInRange(low_range, high_range, var1):

var1=int(input("Re-Enter first variable"))

var2=int(input("Enter your second variable"))

while not IsInRange(low_range, high_range, var2):

var2=int(input("Re-Enter your second variable in the range"))

except ValueError:

print('please use integers')

return

operation = str(input("Enter problem string like this, N1,N2,and Operator, "))

try:

if choice == '1':

print("the sum of", var1, "+", var2, "=", obj.addition(var1, var2))

elif choice == '2':

print("the difference of:", var1, "-", var2, "=", obj.subtraction(var1, var2))

elif choice == '3':

print("the product of:", var1, "*", var2, "=", obj.multiplication(var1, var2))

elif choice == '4':

print("the quotient of:", var1, "/", var2, "=", obj.division(var1, var2))

elif choice == '5':

print(obj.scalc(operation))

elif choice == '6':

print(obj.allInOne(var1,var2))

elif var1 >= low_range and var2 <= high_range:

print("the sum of", var1, "+", var2, "=", obj.addition(var1, var2))

print("the difference of", var1, "-", var2, "=", obj.subtraction(var1, var2))

print("the product of", var1, "*", var2, "=", obj.multiplication(var1, var2))

print("the quotient of", var1, "/", var2, "=", obj.division(var1, var2))

print(obj.scalc(operation))

print(obj.allInOne(var1,var2))

else:

print(IsInRange(low_range, high_range,int))

except ZeroDivisionError:

print("You cannot divide by zero!!")

restart = input("Would like to try again? y for yes!")

if restart == "y" :

main()

else:

print("Thank you for using the calculator.")

return

main()

#mylib

class Operators:

def addition(self,var1,var2):

return var1+var2

def subtraction(self,var1,var2):

return var1-var2

def division(self,var1, var2):

try:

return var1 / var2

except ZeroDivisionError as e:

print("Error: Cannot divide by zero!")

def multiplication(self,var1,var2):

return var1*var2

def scalc(self,p1):

istring = p1.split(",")

res = 0

if istring[2] == "+":

res = self.addition(int(istring[0]), int(istring[1]))

elif istring[2] == "-":

res = self.subtraction(int(istring[0]), int(istring[1]))

elif istring[2] == "*":

res = self.multiplication(int(istring[0]), int(istring[1]))

elif istring[2] == "/":

res = self.division(int(istring[0]), int(istring[1]))

return res

def allInOne(self,var1,var2):

result1= self.addition(var1, var2)

print("{0}+{1}={2}".format(var1,var2,result1))

result2= self.subtraction(var1, var2)

print("{0}-{1}={2}".format(var1,var2,result2))

result3= self.multiplication(var1, var2)

print("{0}*{1}={2}".format(var1,var2,result3))

result4= self.division(var1, var2)

print("{0}/{1}={2}".format(var1,var2,result4))

return {"addition":result1, "subtraction":result2,"multiplication":result3,"division":result4}