title: String in string, get inside string
body: <p>The original List is this   </p>
  
  <pre><code>a=['="1111"', '="2222"', '="3333"', '="4444"']
  </code></pre>
  
  <p>I try this</p>
  
  <pre><code>b=[b.strip('=') for b in a]
  </code></pre>
  
  <p>Then i got this      </p>
  
  <blockquote>
    <p>[ ' "1111"  ', ' "2222" ', ' "3333" ', ' "4444"  ']</p>
  </blockquote>
  
  <p>I have tried some way to remove  outside '   ',but I still can not make it</p>
  
  <p>I want to get </p>
  
  <blockquote>
    <p>["1111","2222","3333","4444"] </p>
  </blockquote>