Seniors, please answer this

[metulburr]

Circular import which happens when two modules import each other.

I don't think this is very common, I've only done it once or twice, and discovered my error almost immediately

It seems to happen often with people using pygame. They usually get so far into a game before realizing that they have to completely rewrite the structure. Most often if they have circular imports, they have other faults too that need to be rewritten.