Question

我正在编写一段代码，用于在用户在页面的表单字段中输入网址时解析页面：＆＃34; url.html＆＃34;。当用户在表单字段中输入url时，它将显示在此视图中（在instance.web_url中）。但是我得到HTTPResponse对象的这个错误。这是代码：

def url(request):
    if request.method == 'POST':   
       form_url =  WebURLForm(request.POST or None)
       title = "Search via URL here"
       instance = form_url.save(commit = False)
       instance.save()

       if instance.web_url == "":
          instance.web_url = "http://www.facebook.com/"
       print instance.web_url


       html = urllib.urlopen(instance.web_url).read()
       soup = BeautifulSoup(html,"lxml")
       lines = []
# kill all script and style elements
       for script in soup(["script", "style"]):
           script.extract()    # rip it out

# get text
       text = soup.get_text()

#break into lines and remove leading and trailing space on each
       lines = (line.strip() for line in text.splitlines())
#break multi-headlines into a line each
       chunks = (phrase.strip() for line in lines for phrase in line.split("  "))
#drop blank lines
       text = '\n'.join(chunk for chunk in chunks if chunk)

       text=text.encode('utf-8')


       words = text.split(".")

       count=0
       terrorism_level=0
       for i in words:
           print count
           if not words[count]:
               words[count] = "this was empty before." 
           json_result = natural_language_classifier.classify('90e7b7x198-nlc-50734',words[count])
           classes =  json_result['classes']
           result = json.dumps(classes, indent=2)
           if (classes[0]['confidence'] > 0.98 and classes[0]['class_name'] == "nhate."):
               print words[count]
               print result
           terrorism_level +=1
           count=count+1     

       context = {"form_url":form_url, "title":title}
       return render(request,'url.html',context)

Answer 1

def url(request):
    if request.method == 'POST':   
       form_url =  WebURLForm(request.POST or None)
       title = "Search via URL here"
       instance = form_url.save(commit = False)
       instance.save()

       if instance.web_url == "":
          instance.web_url = "http://www.facebook.com/"
       print instance.web_url


       html = urllib.urlopen(instance.web_url).read()
       soup = BeautifulSoup(html,"lxml")
       lines = []
# kill all script and style elements
       for script in soup(["script", "style"]):
           script.extract()    # rip it out

# get text
       text = soup.get_text()

#break into lines and remove leading and trailing space on each
       lines = (line.strip() for line in text.splitlines())
#break multi-headlines into a line each
       chunks = (phrase.strip() for line in lines for phrase in line.split("  "))
#drop blank lines
       text = '\n'.join(chunk for chunk in chunks if chunk)

       text=text.encode('utf-8')


       words = text.split(".")

       count=0
       terrorism_level=0
       for i in words:
           print count
           if not words[count]:
               words[count] = "this was empty before." 
           json_result = natural_language_classifier.classify('90e7b7x198-nlc-50734',words[count])
           classes =  json_result['classes']
           result = json.dumps(classes, indent=2)
           if (classes[0]['confidence'] > 0.98 and classes[0]['class_name'] == "nhate."):
               print words[count]
               print result
           terrorism_level +=1
           count=count+1     

       context = {"form_url":form_url, "title":title}
       else:
           form_url = WebURLForm()
           context = {"form_url":form_url, "title":None}
    return render(request,'url.html',context)

尝试一次

Answer 2

因为您可能使用GET方法调用了视图。另外，请阅读Python教程和PEP-8。您的代码格式难看，不符合PEP-8标准。

/ url /上的ValueError视图frontend.views.url没有返回HttpResponse对象。它返回None而不是

2 个答案: