title: have a url that accepts all characters
body: <p>I want a url that accepts all characters,for example:</p>
  
  <pre><code>(r'^company/(?P&lt;key&gt;[a-zA-Z]+)/doclist/$','CompanyHub.views.docList')
  </code></pre>
  
  <p>for <code>key</code> parameter instead of just ascii alphabetic characters It accepts all characters include numbers,symbols like $,-,_,...,alphabet,unicode characters,...</p>
  
  <p>how can I do this?</p>