How to append and uniqify a tuple
<pre><code>d1 = ({'x':1, 'y':2}, {'x':3, 'y':4})
d2 = ({'x':1, 'y':2}, {'x':5, 'y':6}, {'x':1, 'y':6, 'z':7})
</code></pre>

<p>I have two tuple <code>d1</code> and <code>d2</code>. I know tuples are <code>immutable</code>. So I have to append another tuple using list. Is there any better solution.</p>

<p>Next question is How to uniqify a tuple on keys say 'x'. if 'x':1 in keys comes twice it is dulicate.</p>

<pre><code>append_tuple = ({'x':1, 'y':2}, {'x':5, 'y':6}, {'x':1, 'y':6, 'z':7}, {'x':1, 'y':2}, {'x':3, 'y':4})

unique_tuple = ({'x':1, 'y':2},  {'x':3, 'y':4}, {'x':5, 'y':6})
</code></pre>

<p><strong>Note</strong>:
I want to remove the duplicate element from a tuple of dict if key values say 'x' has save value in two dict then those are duplicate element. </p>
