meanremoval.py

# Sebelum mean removal
print("Mean = ", input.mean(), "\n", "Std deviation = ", input.std(axis = 0))

output:
Mean =  4.66666666667 
Std deviation =  [ 2.1602469   2.3570226   2.05480467]

# Sesudah mean removal
data_scaled = preprocessing.scale(input)
print("Mean = ", data_scaled)
print("Std deviation = ", data_scaled.std(axis = 0))

output:
Mean =  [[ 0.46291005 -0.70710678 -0.16222142]
 [-1.38873015  1.41421356 -1.13554995]
 [ 0.9258201  -0.70710678  1.29777137]]
 Std deviation =  [ 1.  1.  1.]