TASK-1.py

#a simple python program to perform basic tasks like addition,subtraction,multiplication,division
print('please select any of the number for performing arithmetic operations')
print("1.Addition")
print('2.Subtraction')
print('3.Multiplication')
print('4.Division')
print('5.exit')
a=int(input('Enter any of the number for performing arithmetic operations'))
def ari(a,var1,var2):
    a,var1,var2=a,var1,var2
    if(a==1):
        print(var1+var2)
    if(a==2):
        print(var1-var2)
    if(a==3):
        print(var1*var2)
    if(a==4):
        print(var1/var2)
    return

#Enter Two numbers
if((a>0) and (a<5)):
    var1 = int(input('Enter First number: '))
    var2 = int(input('Enter Second number: '))
    ari(a,var1,var2)
elif(a==5):
    exit()
else:
    print('Invalid Option')
    print('please select 1/2/3/4/5 only')