Python: Scaling numbers column by column with pandas

Question

I have a Pandas data frame \'df\' in which I\'d like to perform some scalings column by column.

• In column \'a\', I need the maximum number to be 1, the minimum

Answer 1

In case you want to scale only one column in the dataframe, you can do the following:

from sklearn.preprocessing import MinMaxScaler

scaler = MinMaxScaler()
df['Col1_scaled'] = scaler.fit_transform(df['Col1'].values.reshape(-1,1))