Create new folders using python
<p>I am trying to create folders using the following code. Something is not correct and leads to error:</p>

<p>"TypeError: 'str' object is not callable"</p>

<pre><code>import os, sys

a= [4,3,2,1]
print len(a)
for idx in range (len(a)):

    newpath = r'E:\test\tool\folder_%s'(idx) 
    if not os.path.exists(newpath): os.makedirs(newpath)
</code></pre>

<p>Using os.makedirs I can create folders. However, I am not able to suffix those folders in a loop. Any ideas can be helpful. Thanks.</p>
