[Tutor] Invalid syntax error in my program

[Kalpesh Naik]

Sir/Mam
i am doing python language program of simple calculator but there was some errors in my program
Please solve it and also guide me

#SIMPLE CALCULATOR
#1-Addition
#2-Subtraction
#3-Division
#4-Multiplication
#5-Modules
while True:
    n=int(input("Enter your choice:"))
    a=int(input("Enter 1st value:"))
    print("1st value is:",a)
    b=int(input("Enter 2nd value:"))
    print("2nd value is:",b)
    if n==1:
        c=a+b
        print("Addition is : ",c)
        elif n==2:
            d=a-b
            print("Subtraction is : ",d)
            elif n==3:
                x=a/b
                print("Division is : ",x)
                elif n==4:
                    y=a*b
                    print("Multiplication is : ",y)
                    elif n==5:
                        z=a%b
                        print("modules is : ",z)
                        else:
                            print("!!!Enter wrong choice!!!")