无法在Python中使用“ urllib.request.urlretrieve”下载图像

Question

If possible point the solution as well

My Code:

import random
import urllib.request

def download_web_image(url):
    name = random.randrange(1,1000)
    fullname = str(name) + ".jpg"
    urllib.request.urlretrieve(url, fullname)

download_web_image("https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg")

The Error:

Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1318, in do_open encode_chunked=req.has_header('Transfer-encoding')) 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.fram ework/Versions/3.6/lib/python3.6/http/client.py", line 1400, in connect server_hostname=server_hostname) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 407, in wrap_socket _context=self, _session=session) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 814, in init self.do_handshake() File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 1068, in do_handshake self._sslobj.do_handshake() File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ssl.py", line 689, in do_handshake self._sslobj.do_handshake() ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/Users/macintosh/PycharmProjects/Claculatorer/Bucky.py", line 9, in download_web_image(" https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg ") File "/Users/macintosh/PycharmProjects/Claculatorer/Bucky.py", line 7, in download_web_image urllib.request.urlretrieve(url, fullname) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 248, in urlretrieve with contextlib.closing(urlopen(url, data)) as fp: File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 223, in urlopen return opener.open(url, data, timeout) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 526, in open response = self._open(req, data) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 544, in _open '_open', req) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/u rllib/request.py", line 504, in _call_chain result = func(*args) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1361, in https_open context=self._context, check_hostname=self._check_hostname) File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/urllib/request.py", line 1320, in do_open raise URLError(err) urllib.error.URLError:

Process finished with exit code 1

Answer 1

Try this it works for me:

import random
import urllib.request

def download_web_image(url):
    name = random.randrange(1,1000)
    fullname = str(name) + ".jpg"
    urllib.request.urlretrieve(url, fullname)

print(download_web_image("https://upload.wikimedia.org/wikipedia/commons/b/b4/JPEG_example_JPG_RIP_100.jpg"))

This outputs: None but it's fine!

The file is saved in the same directory as the script.

Here is the way I ran the script:

Answer 2

您只需要使用以下命令：

 /Applications/Python\ 3.6/Install\ Certificates.command