temperature conversion program

tempConversion.py

#!/usr/bin/python
# encoding: utf-8
# TODO fix the getconverto() function
"""
Temperature conversion program that converts C->F or F->C
C:\Users\ernest\Downloads\Introduction to Computer Science Using Python (1).pdf
page 174(204 in the pdf)
"""
__author__ = 'Ernest'


def displaywelcome():
    """
    Welcome message
    :return: none
    """
    print('This program will convert a range of temperatures')
    print('Enter (F) to convert Fahrenheit to Celsius')
    print('Enter (C) to convert Celsius to Fahrenheit\n')


def getconverto():
    """
    Figures out which units you want to convert to.
    :return: which units you want to output
    """
    which = input('Enter selection: ')
    while which != 'F' and which != 'C':
        which = input('Enter selection: ')

    return which


def displayfarentocelsius(start, end):
    """
    :param start: start of the temperature range
    :param end: end of the temperature range
    :return: the temperature range
    """
    print('\n Degrees', ' Degrees')
    print('Fahrenheit', 'Celsius')

    for temp in range(start, end + 1):
        converted_temp = (temp - 32) * 5/9
        print('  ', format(temp, '4.1f'), '  ', format(converted_temp, '4.1f'))


def displaycelsiustofahrenheit(start, end):
    """

    :param start: start of tem range
    :param end: end of the temp range
    :return: returns the list of temperatures
    """
    print('\n Degrees', ' Degrees')
    print('Celsius', 'Fahrenheit')

    for temp in range(start, end + 1):
        converted_temp = (5/9 * temp) + 32
        print('  ', format(temp, '4.1f'), '  ', format(converted_temp, '4.1f'))

# main program
# display the welcome message
displaywelcome()

# get the conversion from the user
which = getconverto()

# get range of temperatures to convert
temp_start = int(input('Enter staring temperature to convert: '))
temp_end = int(input('Enter the ending temperature to convert: '))

# display the range of converted temperatures.
if which == 'F':
    displayfarentocelsius(temp_start, temp_end)
else:
    displaycelsiustofahrenheit(temp_start, temp_end)