はてブロ@ama_ch

https://twitter.com/ama_ch

Python Challenge Level9

Python Challenge

※ネタバレ有り

問題

前回より、
http://www.pythonchallenge.com/pc/return/good.html

考え方

「connect the dots」というタイトルですね。画像内のドットを繋げばいいのかな〜なんて思いながらソースを開いてみると、

<!--
first+second=?

first:
146,399,163,403,170,393,169,391,166,386,170,381,170,371,170,355,169,346,167,335,170,329,170,320,170,
310,171,301,173,290,178,289,182,287,188,286,190,286,192,291,194,296,195,305,194,307,191,312,190,316,
190,321,192,331,193,338,196,341,197,346,199,352,198,360,197,366,197,373,196,380,197,383,196,387,192,
389,191,392,190,396,189,400,194,401,201,402,208,403,213,402,216,401,219,397,219,393,216,390,215,385,
215,379,213,373,213,365,212,360,210,353,210,347,212,338,213,329,214,319,215,311,215,306,216,296,218,
290,221,283,225,282,233,284,238,287,243,290,250,291,255,294,261,293,265,291,271,291,273,289,278,287,
279,285,281,280,284,278,284,276,287,277,289,283,291,286,294,291,296,295,299,300,301,304,304,320,305,
327,306,332,307,341,306,349,303,354,301,364,301,371,297,375,292,384,291,386,302,393,324,391,333,387,
328,375,329,367,329,353,330,341,331,328,336,319,338,310,341,304,341,285,341,278,343,269,344,262,346,
259,346,251,349,259,349,264,349,273,349,280,349,288,349,295,349,298,354,293,356,286,354,279,352,268,
352,257,351,249,350,234,351,211,352,197,354,185,353,171,351,154,348,147,342,137,339,132,330,122,327,
120,314,116,304,117,293,118,284,118,281,122,275,128,265,129,257,131,244,133,239,134,228,136,221,137,
214,138,209,135,201,132,192,130,184,131,175,129,170,131,159,134,157,134,160,130,170,125,176,114,176,
102,173,103,172,108,171,111,163,115,156,116,149,117,142,116,136,115,129,115,124,115,120,115,115,117,
113,120,109,122,102,122,100,121,95,121,89,115,87,110,82,109,84,118,89,123,93,129,100,130,108,132,110,
133,110,136,107,138,105,140,95,138,86,141,79,149,77,155,81,162,90,165,97,167,99,171,109,171,107,161,
111,156,113,170,115,185,118,208,117,223,121,239,128,251,133,259,136,266,139,276,143,290,148,310,151,
332,155,348,156,353,153,366,149,379,147,394,146,399

second:
156,141,165,135,169,131,176,130,187,134,191,140,191,146,186,150,179,155,175,157,168,157,163,157,159,
157,158,164,159,175,159,181,157,191,154,197,153,205,153,210,152,212,147,215,146,218,143,220,132,220,
125,217,119,209,116,196,115,185,114,172,114,167,112,161,109,165,107,170,99,171,97,167,89,164,81,162,
77,155,81,148,87,140,96,138,105,141,110,136,111,126,113,129,118,117,128,114,137,115,146,114,155,115,
158,121,157,128,156,134,157,136,156,136

-->

おぉ、いかにも座標っぽい数値がずら〜り。
「first+second=?」と書いてあるから各要素を足すのかと思ったけど、明らかに要素の数が違うから無理。
んじゃfirstの最初の2つの要素がx,y座標で、secondの最初2つの要素に対応していて、それを結ぶ線を引くのかな？いやだから要素数が違うから無理か。
えーと、それなら・・・
firstの中で、先頭から「x1, y1, x2, y2」と並んでると仮定してやってみよう。

#!/usr/bin/env python
#! -*- coding: utf-8 -*-
""" level 9
http://www.pythonchallenge.com/pc/return/good.html
"""
from PIL import Image, ImageDraw

first = (146,399,163,403,170,393,169,391,166,386,170,381,170,371,170,355,169,346,167,335,170,329,170,320,170,
         310,171,301,173,290,178,289,182,287,188,286,190,286,192,291,194,296,195,305,194,307,191,312,190,316,
         190,321,192,331,193,338,196,341,197,346,199,352,198,360,197,366,197,373,196,380,197,383,196,387,192,
         389,191,392,190,396,189,400,194,401,201,402,208,403,213,402,216,401,219,397,219,393,216,390,215,385,
         215,379,213,373,213,365,212,360,210,353,210,347,212,338,213,329,214,319,215,311,215,306,216,296,218,
         290,221,283,225,282,233,284,238,287,243,290,250,291,255,294,261,293,265,291,271,291,273,289,278,287,
         279,285,281,280,284,278,284,276,287,277,289,283,291,286,294,291,296,295,299,300,301,304,304,320,305,
         327,306,332,307,341,306,349,303,354,301,364,301,371,297,375,292,384,291,386,302,393,324,391,333,387,
         328,375,329,367,329,353,330,341,331,328,336,319,338,310,341,304,341,285,341,278,343,269,344,262,346,
         259,346,251,349,259,349,264,349,273,349,280,349,288,349,295,349,298,354,293,356,286,354,279,352,268,
         352,257,351,249,350,234,351,211,352,197,354,185,353,171,351,154,348,147,342,137,339,132,330,122,327,
         120,314,116,304,117,293,118,284,118,281,122,275,128,265,129,257,131,244,133,239,134,228,136,221,137,
         214,138,209,135,201,132,192,130,184,131,175,129,170,131,159,134,157,134,160,130,170,125,176,114,176,
         102,173,103,172,108,171,111,163,115,156,116,149,117,142,116,136,115,129,115,124,115,120,115,115,117,
         113,120,109,122,102,122,100,121,95,121,89,115,87,110,82,109,84,118,89,123,93,129,100,130,108,132,110,
         133,110,136,107,138,105,140,95,138,86,141,79,149,77,155,81,162,90,165,97,167,99,171,109,171,107,161,
         111,156,113,170,115,185,118,208,117,223,121,239,128,251,133,259,136,266,139,276,143,290,148,310,151,
         332,155,348,156,353,153,366,149,379,147,394,146,399)
second = (156,141,165,135,169,131,176,130,187,134,191,140,191,146,186,150,179,155,175,157,168,157,163,157,159,
          157,158,164,159,175,159,181,157,191,154,197,153,205,153,210,152,212,147,215,146,218,143,220,132,220,
          125,217,119,209,116,196,115,185,114,172,114,167,112,161,109,165,107,170,99,171,97,167,89,164,81,162,
          77,155,81,148,87,140,96,138,105,141,110,136,111,126,113,129,118,117,128,114,137,115,146,114,155,115,
          158,121,157,128,156,134,157,136,156,136)

im = Image.open("good.jpg")
draw = ImageDraw.Draw(im)

for elm in range(0, len(first)-2, 2):
    draw.line([first[elm], first[elm+1], first[elm+2], first[elm+3]])

im.show()

実行結果

おぉ？


絵だけ見えるようにします

#!/usr/bin/env python
#! -*- coding: utf-8 -*-
""" level 9
http://www.pythonchallenge.com/pc/return/good.html
"""
from PIL import Image, ImageDraw

first = 略
second = 略

im = Image.open("good.jpg")
new = Image.new(im.mode, im.size)
draw = ImageDraw.Draw(new)

for elm in range(0, len(first)-2, 2):
    draw.line([first[elm], first[elm+1], first[elm+2], first[elm+3]])

new.show()

実行結果

おーなんか牛っぽいですね！


secondの部分は手つかずだったので、secondについても同じ処理をしてみます。

回答

#!/usr/bin/env python
#! -*- coding: utf-8 -*-
""" level 9
http://www.pythonchallenge.com/pc/return/good.html
"""
from PIL import Image, ImageDraw

first = 略
second = 略

im = Image.open("good.jpg")
new = Image.new(im.mode, im.size)
draw = ImageDraw.Draw(new)

for tup in (first, second):
    for elm in range(0, len(tup)-2, 2):
        draw.line([tup[elm+x] for x in range(4)])

new.show()

実行結果

う、牛だー！


という訳で、URLに「cow」と入力して次へ行こうとしたら・・・

hmm. it's a male.

http://www.pythonchallenge.com/pc/return/cow.html

あれ、違うの？雄牛？
ここで僕の得意な英語を駆使し、「buffalo」とか入力してみたけどダメでした。ですよね、バッファローって牛と少し違いますもんね。
大人しく和英辞典で「牛」で検索したら、〔雄牛〕a bull って書いてありますよ！
bullをURLに入力したら・・・正解！！！

感想

まだまだPILの使い方がわかっていません、使い方を調べるだけでひとくろう＞＜
正直first+second=?のヒントは要らなかったなぁ。