Vigilant Vaults

To avoid code duplication, we should follow the DRY principle and extract common code segments into functions or methods.

In addition to the `try` and `except` blocks, there is also a `finally` block that can be used to specify code that should always be executed, regardless of whether an exception was raised.

In addition to handling exceptions, you can also raise your own exceptions when necessary. This can be useful for indicating that something unexpected has happened in your code

Assertions are another way to check for errors in your code. An assertion is a statement that checks whether a certain condition is true, and if it's not, it raises an `AssertionError`.

Refactoring is important because it helps to:
Improve the code's quality
Reduce the code's complexity
Improve the code's readability
Improve the code's maintainability
Improve the code's performance

Using single letter variable names, such as "i" or "j" in loops or "x" and "y" in coordinates can make the code difficult to understand. It is better to use descriptive names that convey the meaning of the variable. For instance, instead of using "i" as a loop variable, we can use "index" or "counter".

For instance, if we use camelCase for naming variables in one part of the code, we should use the same convention in other parts of the code as well.

It is recommended to keep the line length under 79 characters, as per the PEP 8 style guide.

Code reviews are a process where team members review each other's code to identify issues, suggest improvements, and ensure that the code meets the coding standards.