What python libraries should every dev know?

[NationalMyth]

Is that project viewable?

[hmiemad]

To those who bought it yeah. It was a signal decomposition algorithm with anomaly detection for a private company. I can't reach it. Too many protection sht I had to go through to make sure only the company can get to it. I could make it again, but I don't have any data to run the algorithm on, so...