No Module of this name found

[wookie]

I entered the code for a spirograph printing program which was in the book "python playground" by Mahesh Venkitachalam only to find that it would not run.
The error:

Error:
Traceback (most recent call last):
  File "C:\Users\New\Andys Docs\Python\Scripts\spiro.py", line 5, in <module>
    import numpy as np
ImportError: No module named 'numpy'

and, after commenting that line and rerunning, got:

Error:
Traceback (most recent call last):
  File "C:\Users\New\Andys Docs\Python\Scripts\spiro.py", line 9, in <module>
    from PIL import image
ImportError: No module named 'PIL'

The modules not being available surprised me somewhat as I thought that 'numpy' at least was downloaded with Python as standard.
I am using Python 3.5.0 under Microsoft Windows 10. I have not tried anything else because, quite frankly, if the modules are not on my machine, then I don't know what to do next. Can someone please tell me how to resolve these problems?