undantagshantering.py

import glob


def list_files_in_folder():
    files_and_folders = glob.glob('*.*')
    for thing in files_and_folders:
        print(thing)


def ask_for_file_name():
    file = raw_input('Enter name of file to view ')
    return file


def print_file(filename):
    try:
        with open(filename) as grillkorv:
            for line in grillkorv:
                print line
    except IOError, e:
        print("can not find file ({0})".format(filename))
        print('These files exist:')
        list_files_in_folder()
        filename = ask_for_file_name()
        print_file(filename)

list_files_in_folder()
file_to_print = ask_for_file_name()
print_file(filename=file_to_print)