Python - Automating Tasks - Pattern Matching with Regular Expressions(Strong Password Detection)

Automate the Boring Stuff with Python:
Practical Programming for Total Beginners
(No Starch Press)
Al Sweigart (著)

開発環境

• OS X El Capitan - Apple (OS)
• Emacs (Text Editor)
• Python 3.5 (プログラミング言語)

Automate the Boring Stuff with Python: Practical Programming for Total Beginners (Al Sweigart (著)、No Starch Press)のPart 2.(Automating Tasks)、Chapter 7.(Pattern Matching with Regular Expressions)、Practice Projects(Strong Password Detection)を解いてみる。

Practice Projects(Strong Password Detection)

コード(Emacs)

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

import re

def is_string_password(password):
    eight = re.compile(r'.{8,}')
    uppercase = re.compile(r'[A-Z]')
    lowercase = re.compile(r'[a-z]')
    digit = re.compile(r'[0-9]')
    if eight.match(password) and uppercase.search(password) and \
       lowercase.search(password) and digit.search(password):
        return True
    return False


passwords = ['Aa34567', 'a2345678', 'A2345678', 'Aacdefgh', 'Aa345678',
             'Aa345678ij']

for password in passwords:
    print('{0}: {1}'.format(password, is_string_password(password)))

入出力結果(Terminal, IPython)

$ ./sample1.py
Aa34567: False
a2345678: False
A2345678: False
Aacdefgh: False
Aa345678: True
Aa345678ij: True
$