CorrKoef = df.corr()
CorrKoef
CorField = []
for i in CorrKoef:
    for j in CorrKoef.index[abs(CorrKoef[i]) > 0.8]:
        if i != j and j not in CorField and i not in CorField:
            CorField.append(j)
            print (i, ' --> ', j, ', r^2 = ', CorrKoef[i][CorrKoef.index==j].values[0])