Ideally, defaultdict would provide atomic "compute and add only if key is absent" behavior. When __missing__ is called, another thread might insert the key. Or, it can be inserted between the call to ...

As outlined in my blog post, I decided to take on a new habit using a technique I found on the 'get disciplined' subreddit. As one of my new habits I chose: "Code for 15 minutes every day". As part of ...