title: how to replace %s with one variable in python
body: <p>I have a string like</p>
  
  <pre><code>strTemp='i don\'t want %s repeat the %s variable again %s and again %s'%('aa','aa','aa','aa')
  </code></pre>
  
  <p>I want to replace all the %s with 'aa', so I have to repeat the 'aa' for many times, how can I tell the program that I want to replace all the %s just with the same variable, so I needn't type the variable for times</p>