Note 3 — CANTO IX.
Charles Eliot Norton translation
The seven P’s stand for the seven so-called mortal sins,—Peccati, not specific acts, but the evil dispositions of the soul from which all evil deeds spring,—pride, envy, anger, sloth (accidia), avarice, gluttony, and lust. After justification these dispositions which already have been overcome, must be utterly removed from the soul.