时间戳

首页 > 解决方案 > UnboundLocalError：在服务器端分配之前引用了局部变量“插入”

python - UnboundLocalError：在服务器端分配之前引用了局部变量“插入”

问题描述

我已经构建了一个关键字研究应用程序，它在本地服务器上成功运行，但是当我将它部署到Cpanel它时，我抛出了一个错误：

UnboundLocalError：分配前引用的局部变量“插入”：

我该如何解决这个问题？

这是我的代码：

def funcurlscrpping(url):
    
    urldata = requests.get(url)
    soup = BeautifulSoup(urldata.content, "html")
    title = soup.title.string
    print ('TITLE IS :', title)
    meta = soup.find_all('meta')
    for tag in meta:
        if 'name' in tag.attrs.keys() and tag.attrs['name'].strip().lower() in ['keywords']:
            insert = tag.attrs['content']
            print(insert)
    data = insert.split(',')
    return data

def funcurlscrppingwithkeyword(ids):

    for id in ids:
        videourl= 'https://www.youtube.com/watch?v='+ id 
        urldata = requests.get(videourl)
        soup = BeautifulSoup(urldata.content, "html")
        title = soup.title.string
        print ('TITLE IS :', title)
        meta = soup.find_all('meta')
        for tag in meta:
            if 'name' in tag.attrs.keys() and tag.attrs['name'].strip().lower() in ['keywords']:
                insert1 = tag.attrs['content']
                print(insert1)
        data1 = insert1.split(',')
    return data1

def GetTags(request):
    if request.method == 'GET':
        url = request.GET['query']
        type = request.GET['type'] 
        valid=validators.url(url)
        if valid==True:
            obj1=[]
            obj1 = funcurlscrpping(url)
            if type == 'YouTube':
                return JsonResponse({"tags": obj1}, status=200)
            else:
                res = ['#' +  x  for x in obj1]
                return JsonResponse({"tags": res}, status=200)
        else: 
            search_url = 'https://www.googleapis.com/youtube/v3/search'
            params = {
            'part': 'snippet',
            'q':url,
            'key' : settings.YOUTUBE_DATA_API_KEY,
            'maxResults' : 2,
            }
            video_ids = []

            r = requests.get(search_url,params = params)
            results = r.json()["items"]
            for result in results:
                video_ids.append(result['id']['videoId']) 
            obj = []
            obj = funcurlscrppingwithkeyword(video_ids)
            if type == 'YouTube':                     
                return JsonResponse({"tags": obj}, status=200)
            else:
                res = ['#' +  x  for x in obj]
                return JsonResponse({"tags": res}, status=200)
    else:
        return HttpResponse("Request method is not a GET")

任何建议将不胜感激。

谢谢。

标签： pythondjangodjango-viewsvariable-assignmentlocal-variables

解决方案

问题可能来自这里：

for tag in meta:
        if 'name' in tag.attrs.keys() and tag.attrs['name'].strip().lower() in ['keywords']:
            insert = tag.attrs['content']
            print(insert)
    data = insert.split(',')

和这里：

for tag in meta:
            if 'name' in tag.attrs.keys() and tag.attrs['name'].strip().lower() in ['keywords']:
                insert1 = tag.attrs['content']
                print(insert1)
        data1 = insert1.split(',')

如果条件不成立，可能会发生插入未初始化的情况。insert您可以通过在 for 循环之前初始化来解决此问题。

insert = ""  # some default value that works
for tag in meta:
        if 'name' in tag.attrs.keys() and tag.attrs['name'].strip().lower() in ['keywords']:
            insert = tag.attrs['content']
            print(insert)
    data = insert.split(',')

另一个：

insert = ""  # some default value that works
for tag in meta:
                if 'name' in tag.attrs.keys() and tag.attrs['name'].strip().lower() in ['keywords']:
                    insert1 = tag.attrs['content']
                    print(insert1)
            data1 = insert1.split(',')

推荐阅读