Pydev Program Continually Terminating - eclipse

Question

I am fairly new programmer, currently I have been assigned a project to create a looping calculator that even after you use one of the calculator functions it will keep going until you make a selection provided. My problem with my calculator currently is that there is an incessant termination whenever I try to test my function on Pydev. I already fixed the first problem where Pydev read one of my variables (choice) as unused so I used the "ctrl + 1" trick and that got rid of the unused variable warning. Any tips on how I might be able to run this program and have it continually loop?
def main():
loop=1
choice=0 # #UnusedVariable
while loop == 1:
print("Welcome to Calculator Function!")
print("Your options are:")
print(" ")
print("1/) Addition")
print("2/) Subtraction")
print("3/) Multiplication")
print("4/) Division")
print("5/) Quit CalculatorFunction.py")
print(" ")
choice = int(raw_input("Choose your option: ").strip())
if choice == 1:
add1 = input("Add what: ")
add2 = input("To what: ")
print add1, "+", add2, "=", add1+add2
elif choice == 2:
sub2 = input("Subtract what: ")
sub1 = input("From what: ")
print sub1, "-", sub2, "=", sub1-sub2
elif choice == 3:
mult1 = input("Multiply what: ")
mult2 = input("To what: ")
print mult1, "*", mult2, "=", mult1*mult2
elif choice == 4:
div2= input("Divide what: ")
div1= input("From what: ")
print div1, "/", div2, "=", div1/div2
elif choice == 5:
loop = 0
print"Thank you for using CalculatorFunction.py have a good day!"
else:
print"No selection made, please try again."
if __name__ == '__main__':
main()

Answer 1

Your if - else block is outside the while loop, that is why it doesn't work. Here's the properly indented code:
def main():
loop=1
choice=0 # #UnusedVariable
while loop == 1:
print("Welcome to Calculator Function!")
print("Your options are:")
print(" ")
print("1/) Addition")
print("2/) Subtraction")
print("3/) Multiplication")
print("4/) Division")
print("5/) Quit CalculatorFunction.py")
print(" ")
choice = int(raw_input("Choose your option: ").strip())
if choice == 1:
add1 = input("Add what: ")
add2 = input("To what: ")
print add1, "+", add2, "=", add1+add2
elif choice == 2:
sub2 = input("Subtract what: ")
sub1 = input("From what: ")
print sub1, "-", sub2, "=", sub1-sub2
elif choice == 3:
mult1 = input("Multiply what: ")
mult2 = input("To what: ")
print mult1, "*", mult2, "=", mult1*mult2
elif choice == 4:
div2= input("Divide what: ")
div1= input("From what: ")
print div1, "/", div2, "=", div1/div2
elif choice == 5:
loop = 0
print"Thank you for using CalculatorFunction.py have a good day!"
else:
print"No selection made, please try again."
if __name__ == '__main__':
main()
This worked well on pydev.

Answer 2

Thanks to your tips on "indentation" and a couple of other things I finally figured out the program works thank you all for your input. What I did to fix my immediate termination was fix the indentation. Then to make it so the program continually loops if a selection isn't made I added the continue, in essence the only way to terminate the program is to select the option quit which is listed as "5".
def main()
loop=1
choice=0 # #UnusedVariable
while loop == 1:
print(" ")
print("Welcome to Calculator Function!")
print("Your options are:")
print(" ")
print("1) Addition")
print("2) Subtraction")
print("3) Multiplication")
print("4) Division")
print("5) Quit CalculatorFunction.py")
print(" ")
choice = int(raw_input("Choose your option: ").strip())
if choice == 1:
add1 = int(raw_input("Add what: "))
add2 = int(raw_input("To what: "))
print add1, "+", add2, "=", add1+add2
elif choice == 2:
sub2 = int(raw_input("Subtract what: "))
sub1 = int(raw_input("From what: "))
print sub1, "-", sub2, "=", sub1-sub2
elif choice == 3:
mult1 = int(raw_input("Multiply what: "))
mult2 = int(raw_input("To what: "))
print mult1, "*", mult2, "=", mult1*mult2
elif choice == 4:
div2= int(raw_input("Divide what: "))
div1= int(raw_input("From what: "))
print div1, "/", div2, "=", div1/div2
elif choice == 5:
loop = 0 #Ends the program
print"Thank you for using CalculatorFunction.py have a good day!"
else:
print"No selection made, please try again."
continue #loops the program
if name == 'main':
main()