Python format throws KeyError
<p>The following code snippet:</p>

<pre><code>template = "\                                                                                
function routes(app, model){\                                                                
  app.get('/preNew{className}', function(req, res){\                                         
    res.render('{className}'.ejs, {});\                                                      
  });\                                                                                       
});".format(className=className)
</code></pre>

<p>throws a KeyError:</p>

<pre><code>Traceback (most recent call last):   File "createController.py", line 31, in &lt;module&gt;
    });".format(className=className) KeyError: '  app'
</code></pre>

<p>Does someone know why?</p>
