title: How to wrap python argument values in quotes?
body: <p>I am trying to construct a python command as follows ,issue is that some of the arguments values have spaces and the script is failing to run later,
  options <code>-at</code> and <code>-m</code> in the below command have spaces for the values passed to these arguments,I want to wrap these values to add quotes (<code>""</code>)?how can I do that?</p>
  
  <pre><code>change=12345
  source_milestone="source1 milestone"
  target_milestone="target1 milestone"
  cmd =  r'python ./script.py -u username -rl {} -ra adar.py -d 1234567 -at CLONED_FROM_{} -m {} -r AUTOMATION'.format(change,source_milestone.upper(),str(target_milestone))
  
  print cmd
  </code></pre>
  
  <p>OUTPUT:-</p>
  
  <pre><code>python ./script.py -u username -rl 12345 -ra adar.py -d 1234567 -at CLONED_FROM_SOURCE1 MILESTONE -m target1 milestone -r AUTOMATION
  </code></pre>
  
  <p>EXPECTED OUTPUT:-<strong>NOTICE the quotes("") around <code>-at</code> and <code>-m</code></strong></p>
  
  <pre><code>python ./script.py -u username -rl 12345 -ra adar.py -d 1234567 -at "CLONED_FROM_SOURCE1 MILESTONE" -m "target1 milestone" -r AUTOMATION
  </code></pre>