Pandas problem (cut)

#!/usr/bin/env python
# coding: utf-8

import pandas as pd

df = pd.DataFrame({"date": ["18-01-2017","20-01-2017"],
                   "quality": [1,2],
                   "measure": [0.5,0.5]
                  }
                 )
print(df)


bands = pd.DataFrame({"quality": [1,2],
                      "good": [0.25, 0.75],
                      "bad": [0.75, 1.0]})
print(bands)

labels = ["Good", "Satisfactory", "Bad"]

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# Expected output
# ["Satisfactory", "Good"]