Python : attributeerror: long object has no attribute cat

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errors

Python2.7

lambda

I have a dataframe column which has been discretized using pd.cut. While trying to work with an algorithm, requires me to do the following:

for k, v in dictMap.items():
 df.loc[k, column] = v 

This gives me an error:

<pre lang="Python">>ValueError: Cannot setitem on a Categorical with a new category, set the categories first

.

After discretizing, Column A contains values [1,2,3,4,5].

What I have tried:

After figuring out the datatype I have tried to convert the column dtype using:

df["A"] = df ["A"].apply(lambda x: x.cat.codes)

.

This now gives me the error:

AttributeError: long object has no attribute cat

.

print(df["A"])

outputs:

Name:A, Length 891, dtype:category
Categories(25, int64): [0<1<2<3...21<22<23<24]

My goal is to have this discretized column in the dataframe converted to the dtype int.