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    隨筆-295  評(píng)論-26  文章-1  trackbacks-0

    在python中import this就會(huì)展示出The Zen of Python如下:


    The Zen of Python, by Tim Peters

    Beautiful is better than ugly.
    Explicit is better than implicit.
    Simple is better than complex.
    Complex is better than complicated.
    Flat is better than nested.
    Sparse is better than dense.
    Readability counts.
    Special cases aren't special enough to break the rules.
    Although practicality beats purity.
    Errors should never pass silently.
    Unless explicitly silenced.
    In the face of ambiguity, refuse the temptation to guess.
    There should be one-- and preferably only one --obvious way to do it.
    Although that way may not be obvious at first unless you're Dutch.
    Now is better than never.
    Although never is often better than *right* now.
    If the implementation is hard to explain, it's a bad idea.
    If the implementation is easy to explain, it may be a good idea.
    Namespaces are one honking great idea -- let's do more of those!


    從網(wǎng)上搜尋了一下,這被稱(chēng)為python之禪,以下是翻譯


    Python之禪
    賴(lài)勇浩翻譯

    優(yōu)美勝于丑陋(Python 以編寫(xiě)優(yōu)美的代碼為目標(biāo))
    明了勝于晦澀(優(yōu)美的代碼應(yīng)當(dāng)是明了的,命名規(guī)范,風(fēng)格相似)
    簡(jiǎn)潔勝于復(fù)雜(優(yōu)美的代碼應(yīng)當(dāng)是簡(jiǎn)潔的,不要有復(fù)雜的內(nèi)部實(shí)現(xiàn))
    復(fù)雜勝于凌亂(如果復(fù)雜不可避免,那代碼間也不能有難懂的關(guān)系,要保持接口簡(jiǎn)潔)
    扁平勝于嵌套(優(yōu)美的代碼應(yīng)當(dāng)是扁平的,不能有太多的嵌套)
    間隔勝于緊湊(優(yōu)美的代碼有適當(dāng)?shù)拈g隔,不要奢望一行代碼解決問(wèn)題)
    可讀性很重要(優(yōu)美的代碼是可讀的)
    即便假借特例的實(shí)用性之名,也不可違背這些規(guī)則(這些規(guī)則至高無(wú)上)
    不要包容所有錯(cuò)誤,除非你確定需要這樣做(精準(zhǔn)地捕獲異常,不寫(xiě) except:pass 風(fēng)格的代碼)
    當(dāng)存在多種可能,不要嘗試去猜測(cè)
    而是盡量找一種,最好是唯一一種明顯的解決方案(如果不確定,就用窮舉法)
    雖然這并不容易,因?yàn)槟悴皇?Python 之父(這里的 Dutch 是指 Guido )
    做也許好過(guò)不做,但不假思索就動(dòng)手還不如不做(動(dòng)手之前要細(xì)思量)
    如果你無(wú)法向人描述你的方案,那肯定不是一個(gè)好方案;反之亦然(方案測(cè)評(píng)標(biāo)準(zhǔn))
    命名空間是一種絕妙的理念,我們應(yīng)當(dāng)多加利用(倡導(dǎo)與號(hào)召)

     

    The Zen of Python,
    蛇宗三字經(jīng)

    作者:Tim Peters
    翻譯:元?jiǎng)?chuàng)


    Beautiful is better than ugly.
    美勝丑
    Explicit is better than implicit.
    明勝暗
    Simple is better than complex.
    簡(jiǎn)勝?gòu)?fù)
    Complex is better than complicated.
    復(fù)勝雜
    Flat is better than nested.
    淺勝深
    Sparse is better than dense.
    疏勝密
    Readability counts.
    辭達(dá)意
    Special cases aren't special enough to break the rules.
    不逾矩
    Although practicality beats purity.
    棄至清
    Errors should never pass silently.
    無(wú)陰差
    Unless explicitly silenced.
    有陽(yáng)錯(cuò)
    In the face of ambiguity, refuse the temptation to guess.
    拒疑數(shù)
    There should be one-- and preferably only one --obvious way to do it.
    求完一
    Although that way may not be obvious at first unless you're Dutch.
    雖不至,向往之
    Now is better than never.
    敏于行
    Although never is often better than *right* now.
    戒莽撞
    If the implementation is hard to explain, it's a bad idea.
    差難言
    If the implementation is easy to explain, it may be a good idea.
    好易說(shuō)
    Namespaces are one honking great idea -- let's do more of those!
    每師出,多有名


    比較惡搞的是,其實(shí) this 模塊的代碼完全違背了這些原則,為了方便你查看它的代碼,我把它貼出來(lái):
    s = """Gur Mra bs Clguba, ol Gvz Crgref

    Ornhgvshy vf orggre guna htyl.
    Rkcyvpvg vf orggre guna vzcyvpvg.
    Fvzcyr vf orggre guna pbzcyrk.
    Pbzcyrk vf orggre guna pbzcyvpngrq.
    Syng vf orggre guna arfgrq.
    Fcnefr vf orggre guna qrafr.
    Ernqnovyvgl pbhagf.
    Fcrpvny pnfrf nera'g fcrpvny rabhtu gb oernx gur ehyrf.
    Nygubhtu cenpgvpnyvgl orngf chevgl.
    Reebef fubhyq arire cnff fvyragyl.
    Hayrff rkcyvpvgyl fvyraprq.
    Va gur snpr bs nzovthvgl, ershfr gur grzcgngvba gb thrff.
    Gurer fubhyq or bar-- naq cersrenoyl bayl bar --boivbhf jnl gb qb vg.
    Nygubhtu gung jnl znl abg or boivbhf ng svefg hayrff lbh'er Qhgpu.
    Abj vf orggre guna arire.
    Nygubhtu arire vf bsgra orggre guna *evtug* abj.
    Vs gur vzcyrzragngvba vf uneq gb rkcynva, vg'f n onq vqrn.
    Vs gur vzcyrzragngvba vf rnfl gb rkcynva, vg znl or n tbbq vqrn.
    Anzrfcnprf ner bar ubaxvat terng vqrn -- yrg'f qb zber bs gubfr!"""

    d = {}
    for c in (65, 97):
        for i in range(26):
            d[chr(i+c)] = chr((i+13) % 26 + c)

    print "".join([d.get(c, c) for c in s])

    這段晦澀、復(fù)雜、凌亂的代碼,莫非是 Tim Peters 提供的反例?



    大盤(pán)預(yù)測(cè) 國(guó)富論
    posted on 2009-11-05 10:54 華夢(mèng)行 閱讀(4815) 評(píng)論(0)  編輯  收藏 所屬分類(lèi): C
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