The Fourth of July has arrived and the only thing better than the star-spangled holiday landing on a Saturday is that it’s also America’s 250th birthday. The July holiday recognizes the day in 1776, ...

<tr><td><code>d[k] = v</code></td><td>Insert or replace</td><td>No error</td><td>None</td></tr> <tr><td><code>d.get(k)</code></td><td>Safe lookup</td><td><code>None ...