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Yes, pandas!

sage -pip install pandas

See https://pandas.pydata.org/. See the everything page in the GitHub of BuzzFeedNews which contains lots of Jupyter notebooks very often using pandas to analyze data including lots of recent one related to elections, demographics, etc.

See also https://www.statsmodels.org/ for more statistical oriented problems.

Related to finance, maybe you can take a look at this Python Programming for Economics and Finance course.