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我的斯堪的搜索法如何高效
原标题:How efficient is my Python search code

下面是我的“灰色”档案搜索器的nut子和bol子。 我在沙尔仍然 no,比考虑效率和业绩更乐于制定工作守则。 我想从你们的沙尔那里或任何其他语言中知道,老兵在我能做些什么来提高我守则的效率,从而加快步伐? 我在某个地方阅读了描述文字的内容,但我并不真正熟悉这一概念,也不肯定这一概念是否适用。 目前,我的法典大约需要4-5分钟的时间通过100份档案(最大的档案为5000KB)。 这非常缓慢。

法典:

 userstring = raw_input("Enter a search string!")
 ...
 ...
 ...
 if userstring:
        userStrHEX = userstring.encode( hex )
        userStrASCII =   .join(str(ord(char)) for char in userstring)
        regex = re.compile(r"(%s|%s|%s)" % ( re.escape( userstring ), re.escape(userStrHEX ), re.escape( userStrASCII )))      
 else:
    sys.exit( You Must Enter A String!!! )

    count = 0
    count2 = 0
    for afile in filelist:
        (head, filename) = os.path.split(afile)
        if afile.endswith(".log") or afile.endswith(".txt"):
            count2 += 1
            self.progress_bar.Show()
            self.progress_bar.SetRange(numFiles)
            wx.CallAfter(self.progress_bar.SetValue, count2)
            f=ftp.open(afile,  r )
            for i, line in enumerate(f.readlines()):
                result = regex.search(line)
                if self.shouldAbort:
                    return self.shouldAbort
                    break

                if result:
                    count += 1
                    ln = str(i)
                    pathname = os.path.join(afile)
                    template = "

Line: {0}
File: {1}
String Type: {2}

"
                    output = template.format(ln, pathname, result.group())
                    ftp.get(afile,  c:\Extracted\  + filename)
                    temp.write(output)
                    break
            else:
                temp.write("
No Match in: " + os.path.join(afile))
最佳回答

这是一个非常合理的解决办法。

可以更快地利用更多的礼节,但你会失去某种清晰度。

考虑到运行时间很可能由FTP档案检索而不是查询本身决定。 因此,可能还会进一步优化IO约束进程。 见

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