title: Unable to get local issuer certificate and Max retries exceeded in python
body: <p>I tried to crawl <a href="https://foodtracer.taipei.gov.tw/Front/Chain/Product?id=12411160" rel="nofollow noreferrer">https://foodtracer.taipei.gov.tw/Front/Chain/Product?id=12411160</a>
  with</p>
  <pre><code>&gt; import requests
  &gt; `url = 'https://foodtracer.taipei.gov.tw/Front/Chain/Product?id=12411160'
  &gt;
  &gt; r = requests.post(url)
  &gt; 
  &gt; print(r.status_code) # 200
  &gt; 
  &gt; if r.status_code == requests.codes.ok: # OK!   print(&quot;OK!&quot;)`
  </code></pre>
  <p>But this occurred:</p>
  <pre><code>ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1124)
  
  urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='foodtracer.taipei.gov.tw', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1124)')))
  
  requests.exceptions.SSLError: HTTPSConnectionPool(host='foodtracer.taipei.gov.tw', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1124)')))
  </code></pre>
  <p>I tried<code>/Library/Frameworks/Python.framework/Versions/3.8/bin/python3.8 -m pip install --upgrade pip</code> but the error still occurred.<br />
  Is there any other way for me to crawl this website?</p>