Tue Oct 19 17:02:21 2021

python_mistake_test():
  Python version: 3.6.9
  Demonstrate some python mistakes.

python_mistake01():
  Show that A=B is not the right way to copy arrays.

  Use "=" to copy an array

  a =                         [ 1.  2.  3.  4.  5.  6.  7.  8.  9. 10.]
  (Bad) b = a =               [ 1.  2.  3.  4.  5.  6.  7.  8.  9. 10.]
  Do stuff to b, but do not touch a...
  a =                         [-1. -1. -1. -1.  1.  1.  1.  1.  1.  1.]
  b =                         [-1. -1. -1. -1.  1.  1.  1.  1.  1.  1.]

  Repeat, but use COPY rather than "="

  a =                         [ 1.  2.  3.  4.  5.  6.  7.  8.  9. 10.]
  (Correct) b = a.copy() =    [ 1.  2.  3.  4.  5.  6.  7.  8.  9. 10.]
  Do stuff to b, but do not touch a...
  a =                         [ 1.  2.  3.  4.  5.  6.  7.  8.  9. 10.]
  b =                         [-1. -1. -1. -1.  1.  1.  1.  1.  1.  1.]

python_mistake_test:
  Normal end of execution.
Tue Oct 19 17:02:21 2021