From a3e4b0b2711e4c9ad3869fa4a697fb5f04a65a6f Mon Sep 17 00:00:00 2001
From: Paul McCarthy <pauldmccarthy@gmail.com>
Date: Mon, 12 Feb 2018 09:41:32 +0000
Subject: [PATCH] Fix to multiple inheritance code
---
advanced_topics/object_oriented_programming.ipynb | 11 +++++++++--
advanced_topics/object_oriented_programming.md | 11 +++++++++--
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/advanced_topics/object_oriented_programming.ipynb b/advanced_topics/object_oriented_programming.ipynb
index deca29f..59974bc 100644
--- a/advanced_topics/object_oriented_programming.ipynb
+++ b/advanced_topics/object_oriented_programming.ipynb
@@ -1271,7 +1271,6 @@
"\n",
"so.register('mylistener', capitaliseCalled)\n",
"\n",
- "so = StringOperator()\n",
"so.do('capitalise')\n",
"so.do('concat', '?')\n",
"\n",
@@ -1595,7 +1594,15 @@
"\n",
"\n",
"You can also define a method called `__new__` if you need to control the\n",
- "creation stage, although this is very rarely needed. A brief explanation on\n",
+ "creation stage, although this is very rarely needed. One example of where you\n",
+ "might need to implement the `__new__` method is if you wish to create a\n",
+ "[subclass of a\n",
+ "`numpy.array`](https://docs.scipy.org/doc/numpy-1.14.0/user/basics.subclassing.html)\n",
+ "(although you might alternatively want to think about redefining your problem\n",
+ "so that this is not necessary).\n",
+ "\n",
+ "\n",
+ "A brief explanation on\n",
"the difference between `__new__` and `__init__` can be found\n",
"[here](https://www.reddit.com/r/learnpython/comments/2s3pms/what_is_the_difference_between_init_and_new/cnm186z/),\n",
"and you may also wish to take a look at the [official Python\n",
diff --git a/advanced_topics/object_oriented_programming.md b/advanced_topics/object_oriented_programming.md
index 59aa3e9..a180108 100644
--- a/advanced_topics/object_oriented_programming.md
+++ b/advanced_topics/object_oriented_programming.md
@@ -1018,7 +1018,6 @@ def capitaliseCalled(result):
so.register('mylistener', capitaliseCalled)
-so = StringOperator()
so.do('capitalise')
so.do('concat', '?')
@@ -1298,7 +1297,15 @@ created.
You can also define a method called `__new__` if you need to control the
-creation stage, although this is very rarely needed. A brief explanation on
+creation stage, although this is very rarely needed. One example of where you
+might need to implement the `__new__` method is if you wish to create a
+[subclass of a
+`numpy.array`](https://docs.scipy.org/doc/numpy-1.14.0/user/basics.subclassing.html)
+(although you might alternatively want to think about redefining your problem
+so that this is not necessary).
+
+
+A brief explanation on
the difference between `__new__` and `__init__` can be found
[here](https://www.reddit.com/r/learnpython/comments/2s3pms/what_is_the_difference_between_init_and_new/cnm186z/),
and you may also wish to take a look at the [official Python
--
GitLab