TypeError: 'dict' object is not callable
<p>Can some one please explain this.</p>

<pre><code>number_map = { 1: -3, 2: -2, 3: -1, 4: 1, 5: 2, 6: 3 }
input_str = raw_input("Enter something: ")
strikes = [number_map(int(x)) for x in input_str.split()]

strikes  = [number_map(int(x)) for x in input_str.split()]
TypeError: 'dict' object is not callable
</code></pre>
