title: Unable to install any package from Pip
body: <p>I have Ubuntu 20.04 installed on my personal laptop. I installed pip for Python3.8 using the command</p>
  <pre><code>sudo apt install python3-pip
  </code></pre>
  <p>However, everytime I try to install any package using</p>
  <pre><code>pip3 install pandas
  </code></pre>
  <p>I am getting this error</p>
  <pre><code>&gt; WARNING: Retrying (Retry(total=4, connect=None, read=None,
  &gt; redirect=None, status=None)) after connection broken by
  &gt; 'NewConnectionError('&lt;urllib3.connection.VerifiedHTTPSConnection
  &gt; object at 0x7f3122821460&gt;: Failed to establish a new connection:
  &gt; [Errno -3] Temporary failure in name resolution')': /simple/pandas/
  &gt; WARNING: Retrying (Retry(total=4, connect=None, read=None,
  &gt; redirect=None, status=None)) after connection broken by
  &gt; 'NewConnectionError('&lt;urllib3.connection.VerifiedHTTPSConnection
  &gt; object at 0x7f3122821460&gt;: Failed to establish a new connection:
  &gt; [Errno -3] Temporary failure in name resolution')': /simple/pandas/
  &gt; WARNING: Retrying (Retry(total=4, connect=None, read=None,
  &gt; redirect=None, status=None)) after connection broken by
  &gt; 'NewConnectionError('&lt;urllib3.connection.VerifiedHTTPSConnection
  &gt; object at 0x7f3122821460&gt;: Failed to establish a new connection:
  &gt; [Errno -3] Temporary failure in name resolution')': /simple/pandas/
  &gt; WARNING: Retrying (Retry(total=4, connect=None, read=None,
  &gt; redirect=None, status=None)) after connection broken by
  &gt; 'NewConnectionError('&lt;urllib3.connection.VerifiedHTTPSConnection
  &gt; object at 0x7f3122821460&gt;: Failed to establish a new connection:
  &gt; [Errno -3] Temporary failure in name resolution')': /simple/pandas/
  &gt; WARNING: Retrying (Retry(total=4, connect=None, read=None,
  &gt; redirect=None, status=None)) after connection broken by
  &gt; 'NewConnectionError('&lt;urllib3.connection.VerifiedHTTPSConnection
  &gt; object at 0x7f3122821460&gt;: Failed to establish a new connection:
  &gt; [Errno -3] Temporary failure in name resolution')': /simple/pandas/
  </code></pre>
  <p>I have tried all solutions present online. Nothing is working. I am not connected through any proxy server and the internet connection is working perfectly</p>