title: Multiple conditions If statement python doesn't work
body: <p>I can't find what's wrong but my next code doesn't work:</p>
  <pre><code>if finalsum!=0 and (x[0]!='-' or x[0]!='+'):
  </code></pre>
  <p>Do something...</p>
  <p>I need to add 2 more conditions
  If I try only one AND, the code works, if I add the OR, nothing happens.</p>
  <p>Also I've tried few more ways to write it and it doesn't work as well.</p>