Python - BASICS(FILES AND EXCEPTIONS(Writing to a File, an Empty File, Multiple Lines)

Python Crash Course

開発環境

• macOS Sierra - Apple (OS)
• Emacs (Text Editor)
• Python 3.5 (プログラミング言語)

Python Crash Course (Eric Matthes (著)、No Starch Press)のPART1(BASICS)、Chapter 10.(FILES AND EXCEPTIONS)のTRY IT YOURSELF 10-3、4、5(No.5599)を取り組んでみる。

TRY IT YOURSELF 10-3、4、5(No.5599)

コード(Emacs)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

print('10-3.')

with open('guest.txt', 'w') as f:
    name = input()
    print(name, file=f)

print('10-4.')
with open('guest_book.txt', 'w') as f:
    while True:
        name = input()
        if name == 'q':
            break
        print('hello, {0}!'.format(name))
        print(name, file=f)

print('10-5.')
while True:
    reason = input()
    if reason == 'q':
        break
    with open('reasons.txt', 'a') as f:
        print(reason, file=f)

入出力結果(Terminal, IPython)

$ ./sample3.py
10-3.
name0
10-4.
name1
hello, name1!
name2
hello, name2!
q
10-5.
reason1
reason2
q
$ cat guest.txt 
name0
$ cat guest_book.txt 
name1
name2
$ cat reasons.txt 
reason1
reason2
$