While loop help

[thomasancilleri at gmail.com]

On Tuesday, April 9, 2013 9:32:18 AM UTC-4, thomasa... at gmail.com wrote:
> I'm new to learning python and creating a basic program to convert units of measurement which I will eventually expand upon but im trying to figure out how to loop the entire program. When I insert a while loop it only loops the first 2 lines. Can someone provide a detailed beginner friendly explanation. Here is my program. Also suddenly I'm getting an invalid syntax error next to my elif statements when I wasn't a minute ago. What is wrong here?
> 
> 
> 
> #!/usr/bin/env python
> 
> restart = "true"
> 
> while restart == "true":
> 
> #Program starts here
> 
>     print "To start the Unit Converter please type the number next to the conversion you would like to perform"
> 
>     choice = input("\n1:Inches to Meter\n2:Millileters to Pint\n3:Acres to Square-Miles\n")
> 
> 
> 
> #If user enters 1:Program converts inches to meters
> 
>     if choice == 1:
> 
>         number = int(raw_input("\n\nType the amount in Inches you would like to convert to Meters.\n"))
> 
>         operation = "Inches to Meters"
> 
>         calc = round(number * .0254, 2)
> 
>         print "\n",number,"Inches =",calc,"Meters"
> 
>         restart = raw_input("If you would like to perform another conversion type: true\n"
> 
> 
> 
> #If user enters 2:Program converts millimeters to pints  
> 
>     elif choice == 2:
> 
>         number = int(raw_input("\n\nType the amount in Milliliters you would like to convert to Pints.\n"))
> 
>         operation = "Milliliters to Pints"
> 
>         calc = round(number * 0.0021134,2)
> 
>         print "\n",number,"Milliliters =",calc,"Pints"
> 
>         restart = raw_input("If you would like to perform another conversion type: true\n")
> 
> 
> 
> #If user enter 3:Program converts kilometers to miles
> 
>     elif choice == 3:
> 
>         number = int(raw_input("\n\nType the amount in Kilometers you would like to convert to Miles.\n"))
> 
>         operation = "Kilometers to Miles"
> 
>         calc = round(number * 0.62137,2)
> 
>         print "\n",number,"Kilometers =",calc,"Miles"
> 
>         restart = raw_input("If you would like to perform another conversion type: true\n")