title: python3 --version shows "NameError: name 'python3' is not defined"
body: <p>When we type </p>
  
  <pre><code>python3 --version (or --V)
  </code></pre>
  
  <p>it is supposed to show us the version of the python right?</p>
  
  <p>However, when I do this I get the following error:</p>
  
  <blockquote>
    <p>NameError: name 'python3' is not defined</p>
  </blockquote>
  
  <p>This is also the case when I tried to install the pip by using</p>
  
  <pre><code>&gt;&gt;&gt; python3 get-pip.py
    File "&lt;stdin&gt;", line 1
      python3 get-pip.py
                ^
  SyntaxError: invalid syntax
  </code></pre>