title: What causes SSLCertVerificationError, CERTIFICATE_VERIFY_FAIL when using Python on Windows?
body: <p>If I do this:</p>
  <pre class="lang-py prettyprint-override"><code>import requests
  url = 'https://us-street.api.smartystreets.com/i/redacted/the/url/because/its/an/api/call/with/private/info'
  r = requests.get(url)
  </code></pre>
  <p>I get this:</p>
  <pre><code>SSLError: HTTPSConnectionPool(host='us-street.api.smartystreets.com', port=443): Max retries exceeded with url: /i/redacted/the/url/because/its/an/api/call/with/private/info (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1131)')))
  </code></pre>
  <p>However, when I put the URL directly into my Chrome browser, I get a response.</p>