def rqst_user_input(property, current_value):
    """
    Ask user to modify the property
    given and retuns the modification
    """
    print('Currently: {prop} = {value}'.format(prop=property, value=
        current_value))
    update = input('Please modify (leave blank to leave unchanged):')
    if update == '':
        return current_value
    else:
        return update
