Стандартизация столбцов Панды
columns = ['A', 'B','C'] #specify the column names
for col in columns:
df[col] = (df[col] - df[col].mean())/df[col].std()
pythonized
columns = ['A', 'B','C'] #specify the column names
for col in columns:
df[col] = (df[col] - df[col].mean())/df[col].std()