python standardize dataframe code example

Example 1: normalize data python pandas

import pandas as pd
from sklearn import preprocessing

x = df.values #returns a numpy array
min_max_scaler = preprocessing.MinMaxScaler()
x_scaled = min_max_scaler.fit_transform(x)
df = pd.DataFrame(x_scaled)

Example 2: standardise columns python

from sklearn.preprocessing import StandardScaler
df[['col1', 'col2']] = StandardScaler().fit_transform(df[['col1', 'col2']])