title: Python: how to convert string with \unnnn escapes to Unicode string?
body: <p>I am using Python and unfortunately my code needs to convert a string that represents Unicode characters in the string as <code>\u1234</code> escapes into the original string, like:</p>
  <p>Here is the code string that I got from other code:</p>
  <pre><code>\u6b22\u8fce\u63d0\u4ea4\u5fae\u535a\u641c\u7d22\u4f7f\u7528\u53cd\u9988\uff0c\u8bf7\u76f4\u63a5
  </code></pre>
  <p>I need to convert it back to the original string. How to do that?</p>