title: How can i increment int number in leading zero number?
body: <p>I am unable to increment a number in leading zero numbers. </p>
  
  <pre><code>a = 2
  a = ('%02d' % a) #02
  
  a = a + 1
  print(a)
  </code></pre>
  
  <p>Code Error:</p>
  
  <pre><code>TypeError: can only concatenate str (not "int") to str
  </code></pre>
  
  <p>Expected Result:</p>
  
  <pre><code>02
  
  03
  
  04
  
  05
  </code></pre>
  
  <p>Can anyone tell me best possible solution.</p>