Plurrrr

Let’s see some recommendations on how to prevent the phenomenon of spaghetti code just by minimizing the visibility of variables.

Our aim will be reducing to the minimum possible the portion of code where our variables are visible over the source code, namely reducing the scope of variables.

I am a big fan of Java Memory Management and in this article, I will try to explain how to take and analyze heap dump with examples, but let’s refresh our minds and remember what we know about this domain. After some theoretical information, we will take a heap dump and will analyze it for a simple application.

The Python standard library json.load does not have “side effects” besides reading a stream of text input. Because I assumed YAML was equivalent to JSON and had not read the 23,000+ word spec, I assumed that PyYAML’s yaml.load had the same properties. Last June, I learned that this was incorrect.

In tip #7 of 10 Common Security Gotchas in Python, I learned that using yaml.load could run arbitrary code. While the danger of this possibility is limited only by your imagination, the article provided the very plausible example of having your passwords emailed to a hacker.