Temperature Converter - Dr. H

from sys import argv, exit # import argv and exit functions

def to_f(c): # Convert celsius to ferinheight
    temp = (c * 9/5) + 32
    return temp

def to_c(f): # Convert ferinheight to celsius
    temp = (f - 32) * 5/9
    return temp

def main():
    args = argv[1:] # Creates an argument list omitting the omitting the [0] element
    if len(argv) < 2: exit(1) # If less than two arguments
    if args[0] == '-f': # If the first argument is -f
        print args[1], 'ferinheight is', str(to_c(int(args[1]))), 'celsius'
    elif args[0] == '-c': # If the first argument is -c
        print args[1], 'celsius is', str(to_f(int(args[1]))), 'ferinheight'
    else: exit(1)

if __name__ == '__main__':
    main()