파이썬 request.get () 사용시 제공된 스키마 및 기타 오류가 없습니다.

버전 2.7 및 Mac입니다.

어떤 이유로 "제공된 스키마 없음"과 같은 오류와 request.get () 자체를 사용할 때 오류가 발생합니다.

내 코드는 다음과 같습니다.

# Saves the XKCD comic page for offline read

import requests, os, bs4, shutil

url = 'http://xkcd.com/'

if os.path.isdir('xkcd') == True: # If xkcd folder already exists
    shutil.rmtree('xkcd') # delete it
else: # otherwise
    os.makedirs('xkcd') # Creates xkcd foulder.


while not url.endswith('#'): # If there are no more posts, it url will endswith #, exist while loop
    # Download the page
    print 'Downloading %s page...' % url
    res = requests.get(url) # Get the page
    res.raise_for_status() # Check for errors

    soup = bs4.BeautifulSoup(res.text) # Dowload the page
    # Find the URL of the comic image
    comicElem = soup.select('#comic img') # Any #comic img it finds will be saved as a list in comicElem
    if comicElem == []: # if the list is empty
        print 'Couldn\'t find the image!'
    else:
        comicUrl = comicElem[0].get('src') # Get the first index in comicElem (the image) and save to
        # comicUrl

        # Download the image
        print 'Downloading the %s image...' % (comicUrl)
        res = requests.get(comicUrl) # Get the image. Getting something will always use requests.get()
        res.raise_for_status() # Check for errors

        # Save image to ./xkcd
        imageFile = open(os.path.join('xkcd', os.path.basename(comicUrl)), 'wb')
        for chunk in res.iter_content(10000):
            imageFile.write(chunk)
        imageFile.close()
    # Get the Prev btn's URL
    prevLink = soup.select('a[rel="prev"]')[0]
    # The Previous button is first <a rel="prev" href="/1535/" accesskey="p">&lt; Prev</a>
    url = 'http://xkcd.com/' + prevLink.get('href')
    # adds /1535/ to http://xkcd.com/

print 'Done!'

오류는 다음과 같습니다.

Traceback (most recent call last):
  File "/Users/XKCD.py", line 30, in <module>
    res = requests.get(comicUrl) # Get the image. Getting something will always use requests.get()
  File "/Library/Python/2.7/site-packages/requests/api.py", line 69, in get
    return request('get', url, params=params, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 451, in request
    prep = self.prepare_request(req)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 382, in prepare_request
    hooks=merge_hooks(request.hooks, self.hooks),
  File "/Library/Python/2.7/site-packages/requests/models.py", line 304, in prepare
    self.prepare_url(url, params)
  File "/Library/Python/2.7/site-packages/requests/models.py", line 362, in prepare_url
    to_native_string(url, 'utf8')))
requests.exceptions.MissingSchema: Invalid URL '//imgs.xkcd.com/comics/the_martian.png': No schema supplied. Perhaps you meant http:////imgs.xkcd.com/comics/the_martian.png?

문제는이 책에서 프로그램에 대한 섹션을 여러 번 읽고 Requests 문서를 읽고 여기에 대한 다른 질문을 살펴본 것입니다. 내 구문이 올바르게 보입니다.

당신의 도움을 주셔서 감사합니다!

편집하다:

이것은 작동하지 않았습니다.

comicUrl = ("http:"+comicElem[0].get('src')) 

http : 전에 추가하면 스키마 제공 오류가 제거 될 것이라고 생각했습니다.

 

해결 방법

 

comicUrl 을 다음으로 변경하십시오.

comicUrl = comicElem[0].get('src').strip("http://")
comicUrl="http://"+comicUrl
if 'xkcd' not in comicUrl:
    comicUrl=comicUrl[:7]+'xkcd.com/'+comicUrl[7:]

print "comic url",comicUrl

 

참조 페이지 https://stackoverflow.com/questions/30770213