Question

Are there any python libraries that do multiple regressions?

Answer 1

You can use sklearn.linear_model.LinearRegression. Something like this:

from sklearn import linear_model
clf = linear_model.LinearRegression()
clf.fit([[getattr(t, 'x%d' % i) for i in range(1, 8)] for t in texts],
        [t.y for t in texts])