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Re:Seaborn: a high-level Python interface for drawing statis... by shoyer on Sunday May 03, 2015 @01:49PM (#9482216)
I agree -- you shouldn't read sources you don't want to treat as derivative while you're writing an independent implementation. So yes, the code you've already written is GPL.

But suppose you decide to reimplement the algorithm now, months later (based only on the notes you wrote on Wikipedia). I'm not a lawyer, but I would say that's almost certainly independent, unless you have extraordinary memory.

Re:Seaborn: a high-level Python interface for drawing statis... by jordigh on Sunday May 03, 2015 @02:14PM (#9482346)
I don't know. Maybe. I don't know how a judge and a jury would interpret that situation. They might agree with you or they might not. The only safe jurisprudence I know of is clean-room design, and it's what the SFLC documents I have received recommend.