酸菜

Question

我已经做了这个函数，它允许我输入一个引用和一个作者，然后将它们pickle到一个.txt文件中。你知道吗

然而，似乎我可能被限制为只有一行酸洗信息，当我执行“enterquote”函数时，我最终会覆盖这些信息。我似乎不知道如何把更多的信息放进文件里。你知道吗

我怎么能这么做？你知道吗

 def readquote():
    f = open("quote.txt","r")
    pquote = pickle.load(f)
    pauthor = pickle.load(f)
    print "%3s\n - %s" % (pquote, pauthor)

def enterquote():
    f = open("quote.txt","w")
    quote = raw_input("What quote has its place in the quote book? \n to quit press Q\n\n")
    if quote != "Q":
        pickle.dump(quote, f)
        author = raw_input("what author said that? \n to quit press Q \n\n")
        pickle.dump(author, f)
        if author == "Q":
            print "goodbye"
    elif quote == "Q":
        print "goodbye"
    f.close()

我用架子试过这个：

def readquote():
    f = shelve.open('quote.txt')
    psaying = f[quote["saying"]]
    pauthor = f[quote["author"]]
    for key in quote :
        print "%3s\n - %s" % (psaying, pauthor)


def enterquote2():
    f = shelve.open('quote.txt')
    quote = {}
    quote["saying"] = raw_input("What quote has its place in the quote book? \n to quit press Q\n\n")
    if quote != "Q":
        f['saying'] = saying
        quote[author] = raw_input("what author said that? \n to quit press Q \n\n")
        f['author'] = author
        if author == "Q":
            print "goodbye"
    elif saying == "Q":
        print "goodbye"


    f.close()

但是它给了我一个关于“psaying=f[quote[“saying”]”的错误

我想用词汇格式把说辞和作者结合成引语，这样我就可以把它们一个接一个地放在书架上，但这让我很困惑。你知道吗

Answer 1

酸洗是针对单个对象的。如果要持久保存多个对象，请使用shelve模块。它将为您提供一个键值存储。你知道吗

例如，可以将enterquote更改为以下内容：

def enterquote():
    f = shelve.open('quote')
    quote = raw_input("What quote has its place in the quote book? \n to quit press Q\n\n")
    if quote != "Q":
        f['quote'] = quote
        author = raw_input("what author said that? \n to quit press Q \n\n")
        f['author'] = author
        if author == "Q":
            print "goodbye"
    elif quote == "Q":
        print "goodbye"
    f.close()

然后还需要以类似的方式修改readquote函数。你知道吗