When using backslash to reduce line length, allow one indent for following lines.

[jodle001]

Here is an example of what I mean. You can see that the formatter moves the .from(Vector2.ZERO) line to the same indent as the one above it.

But I think it reads much better, when continuing lines, to have them indented. This could just be an optional argument in case others disagree.

Before Formatting

After Formatting

[theXYZT]

According to the style guide, this should use two extra indent levels, not just one. So, it would be:

tween.tween_property(...) \
        .from(...)