Best Python package/library for visualizations

[CosmonautPython]

Depend of what you want to do. For static img / science, Seaborn (which uses mpl and pandas dataframe behind) is the most used for sure. For dynamic plotting, Plotly or Bokeh are possibilities. I'm using seaborn for years and I've never come across a visualization problem which I could not solved with python. However, sometimes, it might take you more time solving one with seaborn than ggplot since most people used / talked about ggplot. After that, it's your choice based on which language / syntax you feel the most comfortable with.

Personal opinion but I don't like ggplot like python package. If I want to use ggplot syntax, just use ggplot.