The with open() approach is probably the most useful thing for beginners to get comfortable with here. It saves you from having to remember to close the file manually.

I’d also be careful with the difference between w and a. It’s an easy mistake to make when you’re starting out, because w will replace the existing contents, while a keeps what’s already there and adds to it.

Another small thing worth keeping in mind is file size. For a small text file, read() is perfectly fine, but for a large file, processing it line by line can avoid loading everything into memory at once.

These basics cover a lot of everyday Python work, especially when dealing with logs, text files, or simple data storage.