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Convert categorical column to int in pandas

Column dataframe to int

df[[column_name]].astype(int)

3

Convert a pandas column to int

# convert Series
my_series = pd.to_numeric(my_series)

# convert column "a" of a DataFrame
df["a"] = pd.to_numeric(df["a"])

2

Source: stackoverflow.com

Convert categorical column to int in pandas

from sklearn import preprocessing

lab_encoder = preprocessing.LabelEncoder()
df['column'] = lab_encoder.fit_transform(df['column'])

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