Pythonically transforming a dictionary
<p>I have 2 dicts:</p>

<pre><code>dict1 = {'field1':'value1', 'field2':'value2',...... }
dict2 = {'field1':'value1_1', 'field2':'value2_2','field3':'value3_3'}
</code></pre>

<p>I want dict1's field1 and field2's values to be dict2's field1 and field2's values.</p>

<p>So i want dict1 to be: <code>dict1 = {'field1':'value1_1', 'field2':'value2_2'}</code>, BUT dict1 has many other key/value pairs that are not in dict2 and i want to keep those the same.</p>

<p>What is the most pythonic way of doing it?</p>
