-3
繼「無聊東西自動化」書後，我寫了一個腳本來下載每一個xkcd漫畫。我完全按照本書的代碼（據我所知），但我收到了一個我不明白的錯誤。 Link 回溯：XKCD漫畫拼圖程序錯誤
/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 /Users/ericdusseau/PycharmProjects/AutomateTheBoringStuff/downloadXkcd.py
Downloading page http://xkcd,com...
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/connection.py", line 141, in _new_conn
(self.host, self.port), self.timeout, **extra_kw)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/util/connection.py", line 60, in create_connection
for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/socket.py", line 743, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 8] nodename nor servname provided, or not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 356, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 1026, in _send_output
self.send(msg)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/http/client.py", line 964, in send
self.connect()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/connection.py", line 166, in connect
conn = self._new_conn()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/connection.py", line 150, in _new_conn
self, "Failed to establish a new connection: %s" % e)
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.HTTPConnection object at 0x104f80240>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/adapters.py", line 423, in send
timeout=timeout
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 649, in urlopen
_stacktrace=sys.exc_info()[2])
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/packages/urllib3/util/retry.py", line 376, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
requests.packages.urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='xkcd,com', port=80): Max retries exceeded with url:/(Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x104f80240>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Users/ericdusseau/PycharmProjects/AutomateTheBoringStuff/downloadXkcd.py", line 11, in <module>
res = requests.get(url)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/api.py", line 70, in get
return request('get', url, params=params, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/api.py", line 56, in request
return session.request(method=method, url=url, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/sessions.py", line 488, in request
resp = self.send(prep, **send_kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/sessions.py", line 609, in send
r = adapter.send(request, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/requests/adapters.py", line 487, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='xkcd,com', port=80): Max retries exceeded with url:/(Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x104f80240>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known',))
Process finished with exit code 1
源碼：
#! python3
# downloadXKCD.py - Downloads every single XKCD comic.
import requests, os, bs4
url = 'http://xkcd,com' #starting url
os.makedirs('xkcd', exist_ok=True) # store comics in ./xkcd
while not url.endswith('#'):
#Download the page
print('Downloading page %s...' % url)
res = requests.get(url)
res.raise_for_status()
soup = bs4.BeautifulSoup(res.text)
#Find the URL of the comic image.
comicElem = soup.select('#comic img')
if comicElem == []:
print('Could not find comic image.')
else:
try:
comicUrl = 'http:' + comicElem[0].get('src')
#Download the image.
print('Downloading image %s...' % (comicUrl))
res = requests.get(comicUrl)
res.raise_for_status()
except requests.exceptions.MissingSchema:
#Skip this comic
prevLink = soup.select('a[rel="prev"]')[0]
url = 'http://xkcd.com' + prevLink.get('href')
continue
#Save the image to ./xkcd
imageFile = open(os.path.join('xkcd', os.path.basename(comicUrl)), 'wb')
for chunk in res.iter_content(100000):
imageFile.write(chunk)
imageFile.close()
#Get the Prev button's url.
prevLink = soup.select('a[rel="prev"]')[0]
url = 'htt[://xkcd.com' + prevLink.get('href')
print('Done.')
'URL =「HTTP：// XKCD，com''這應該是'.com'，不' com' – Andy
我可以看到幾個重新定義的基地網址。而且，在你的代碼的底部，你的網址看起來不正常：'htt [：//'。 – Aif