"""
Create array w with elements
0, 0.1, 0.2, ..., 3.0
"""
import numpy as np

#calculate number of points from the
#interval length and distance:
dx = 0.1
n = round(3.0/dx) + 1

w = np.linspace(0.0,3.0,n)

print('Entire array, w = ', w)
print()
print('Slices:')
print('w[:] = ', w[:])
print()
print('w[:-2] = ', w[:-2])
print()
print('w[::5] =', w[::5])
print()
print('w[2:-2:6] =', w[2:-2:6])

"""
Terminal> python slicing.py
Entire array, w =  [0.  0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.  1.1 1.2 1.3 1.4 1.5 1.6 1.7
 1.8 1.9 2.  2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3. ]

Slices:
w[:] =  [0.  0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.  1.1 1.2 1.3 1.4 1.5 1.6 1.7
 1.8 1.9 2.  2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3. ]

w[:-2] =  [0.  0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.  1.1 1.2 1.3 1.4 1.5 1.6 1.7
 1.8 1.9 2.  2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8]

w[::5] = [0.  0.5 1.  1.5 2.  2.5 3. ]

w[2:-2:6] = [0.2 0.8 1.4 2.  2.6]
"""