title: Windows10 'python3' is not recognized as an internal or external command, operable program or batch file
body: <h2>Windows 10</h2>
  <p>When I tried install with below command</p>
  <p><code>python3 -m pip install jupyter</code></p>
  <p>getting an error:</p>
  <p><code>'python3' is not recognized as an internal or external command, operable program or batch file.</code></p>
  <ul>
  <li>Path variable is setup</li>
  <li>pip is also working fine.</li>
  </ul>