python - How do I quantize data in pandas? -

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i have dataframe 

a = pd.dataframe(a.random.random(5, 10), columns=['col1','col2','col3','col4','col5'])

i'd quantize specific column, col4, according set of thresholds (the corresponding output integer 0 number of levels). there api that?

most pandas objects compatible numpy functions. use numpy.digitize:

import pandas pd  = pd.dataframe(pd.np.random.random((5, 5)), columns=['col1','col2','col3','col4','col5']) #       col1      col2      col3      col4      col5 #0  0.523311  0.266401  0.939214  0.487241  0.582323 #1  0.274436  0.761046  0.155482  0.630622  0.044595 #2  0.505696  0.953183  0.643918  0.894726  0.466916 #3  0.281888  0.621781  0.900743  0.339057  0.427644 #4  0.927478  0.442643  0.541234  0.450761  0.191215  pd.np.digitize( a.col4, bins = [0.3,0.6,0.9 ]  ) #array([1, 2, 2, 1, 1])

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