title: How to use Variable value for another string
body: <p>i have tried the below code and  getting results s i mentioned below.</p>
  
  <p>code:</p>
  
  <pre><code>yday_mnth = '201905'
  b = yday_mnth
  x = 'yday_mnth'
  print b
  print x
  </code></pre>
  
  <p>Output here is as below:</p>
  
  <pre><code>201905
  yday_mnth
  </code></pre>
  
  <p>Which means for <code>b</code> am getting value as <code>201905</code> however for <code>x</code> I'am getting <code>yday_mnth</code> 
  as its a <code>string</code> 
  however is there any way to convert the <code>x</code> to print value 
  of <code>yday_mnth</code>? i.e <code>201905</code></p>