pyqt5 qlistwidget大文本的性能

Question

我正在编写一个pyqt5gui应用程序来解析具有以下结构的特定日志文件。每一行都已在列表中拆分为字符串并存储为自动呼叫. 此列表存储约60K行数据。你知道吗

目标是使用用户输入字符串进行搜索，找到行中包含输入字符串的所有调用ID（1、2、3等）。然后找到与该调用ID相关的所有消息，并使用qlistwidget按顺序显示它们（我喜欢qlistwidget干净的外观）。我试过Qplaintext，但它花了很长时间才显示出来自动呼叫)你知道吗

• 我有一个qlineedit来收集用户输入
• 我接受这个输入，使用regex来查找自动呼叫匹配用户输入的
• 再次使用regex查找所有call ID号码（与用户输入匹配的行数），并将它们放入列表中
• 然后使用for循环将具有该调用ID的所有行添加到qlistwidget

我可以使用qlistwidget addItem和一个简单的for循环来显示所有50K行自动呼叫，需要几秒钟（可以接受）。你知道吗

for call in self.calls:
        self.output.addItem(call)

我的问题是，当我实现我的搜索功能时，如果有大量的行匹配，应用程序会非常困难，需要很长时间来显示数据，即使它是来自自动呼叫. 我尝试使用嵌套for循环和条件、列表理解，以及for循环和regex。所有这些都大致执行相同的操作，10万行解析数据可能需要20-30秒。你知道吗

希望有人能给我一个更快的方式来显示数据使用qlistwidget指针。你知道吗

数据：

Oct 12 18:38:34 user.info server1 host:server:  INFO : call 1: allocated for "Web client" conference participation
Oct 12 18:38:34 user.info server1 host:server:  INFO : call 1: setting up combined RTP session for DTLS (combined media and control)
Oct 12 18:38:34 user.info server1 host:server:  INFO : call 1: starting DTLS combined media negotiation (as initiator)
Oct 12 18:38:35 user.info server1 host:server:  INFO : call 1: completed DTLS combined media negotiation
Oct 12 18:38:35 user.info server1 host:server:  INFO : call 1: media framework reporting rx video RTP frequency 0 - fixed up to 90000
Oct 12 18:38:35 user.info server1 host:server:  INFO : call 1: starting DTLS combined media negotiation (as initiator)
Oct 12 18:38:36 user.info server1 host:server:  INFO : call 1: completed DTLS combined media negotiation
Oct 12 18:38:59 user.info server1 host:server:  INFO : call 1: tearing down (conference media)
Oct 12 18:51:27 user.info server1 host:server:  INFO : call 2: recognised as Avaya
Oct 12 18:51:27 user.info server1 host:server:  INFO : call 2: incoming SIP audio call from
Oct 12 18:51:40 user.info server1 host:server:  INFO : call 3: outgoing encrypted SIP call to 
Oct 12 18:51:40 user.info server1 host:server:  INFO : call 3: setting up peer to peer media instantiation
Oct 12 18:51:40 user.info server1 host:server:  INFO : call 3: setting up UDT RTP session for DTLS (combined media and control)
Oct 12 18:51:40 user.info server1 host:server:  INFO : call 3: SIP call ringing
Oct 12 18:51:40 user.info server1 host:server:  INFO : call 3: determined far end good lip sync status, 1
Oct 12 18:51:42 user.info server1 host:server:  INFO : call 3: remote layout version supported by peer now 6
Oct 12 18:51:44 user.info server1 host:server:  INFO : call 4: allocated for "Web client" conference participation
Oct 12 18:51:44 user.info server1 host:server:  INFO : call 4: setting up combined RTP session for DTLS (combined media and control)
Oct 12 18:51:44 user.info server1 host:server:  INFO : call 4: starting DTLS combined media negotiation (as initiator)
Oct 12 18:51:44 user.info server1 host:server:  INFO : call 4: completed DTLS combined media negotiation
Oct 12 18:52:47 user.info server1 host:server:  INFO : call 3: ending; local teardown - connected for 1:07

代码：

if len(self.searchbar.text()) > 2:

    self.output_filtered.setHidden(False)

    #Regex compiles
    re_searchstring = re.compile(r"(^.*?%s.*?$)" % self.searchbar.text(), re.IGNORECASE)
    re_callindex = re.compile(r"call\s(\d+):")

    #Get results of all calls matching searchbar input
    result = list(filter(re_searchstring.match, self.calls))

    #Build a temp list with call index number
    call_list_temp = []
    for item in result:
        callindex = re_callindex.findall(item)
        call_list_temp.append(callindex)
    #Merge the call list, remove dups, and sort
    call_list_temp = list(itertools.chain(*call_list_temp))
    call_list = list(OrderedDict.fromkeys(call_list_temp))

    ##############################
    # For loops with conditional
    for index in call_list:
        for calls in self.calls:
            if "call " + str(index) + ":" in calls:
                self.output_filtered.addItem(calls)

    # List Comprehension
    test = [calls for index in call_list for calls in self.calls if "call " + str(index) + ":" in calls]
    for call in test:
        self.output_filtered.addItem(call)

    # For loops with regex
    for index in call_list:
        re_callfinder = re.compile(r"(^.*call\s%s.*$)" % index)
        for item in self.calls:
            call = re_callfinder.findall(item)
            for line in call:
                self.output_filtered.addItem(line)

Answer 1

您可以切换到Model/View system，并使用QListView而不是QListWidget。这样，您就可以利用QModel类，它是专为这类工作设计的。。。你知道吗