title: How to check if a variable is empty in python?
body: <p>I am wondering if python has any function such as php empty function (http://php.net/manual/en/function.empty.php) which check if the variable is empty with following criteria</p>
  
  <pre><code>"" (an empty string)
  0 (0 as an integer)
  0.0 (0 as a float)
  "0" (0 as a string)
  NULL
  FALSE
  array() (an empty array)
  </code></pre>