title: Failed test #2. Wrong answer
body: <p>The input for this program are two sets. Each set in a separate line; elements of the set are space separated.</p>
  
  <p>Your program must output the symmetric difference of these sets.</p>
  
  <p><strong>Example</strong></p>
  
  <p>Symmetric difference of the sets {1, 2, 3} and {0, 1, 2} equals to {0, 3}.</p>
  
  <p><strong>Sample Input:</strong></p>
  
  <pre><code>1 2 3
  0 1 2
  </code></pre>
  
  <p><strong>Sample Output:</strong></p>
  
  <pre><code>0 3
  </code></pre>
  
  <p><strong>My Solution :</strong></p>
  
  <pre><code>set_1 = set(input())
  set_2 = set(input())
  
  difference_set1 = set_1 - set_2
  difference_set2 = set_2 - set_1
  
  for x in difference_set1:
      difference_set2.add(x)
  
  for x in difference_set2:
      print(x, end=' ')
  </code></pre>
  
  <p>Test Results are failing... Can somebody please explain :</p>