Links and renumbering

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David Beazley
2020-05-26 15:30:14 -05:00
parent 9c032f7a23
commit 45c7ec1f4a
10 changed files with 49 additions and 42 deletions

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@@ -362,10 +362,10 @@ Frameworks / libraries sometimes use it for advanced features involving composit
## Exercises
In Exercise 4.1, you defined a class `Stock` that represented a holding of stock.
In Section 4, you defined a class `Stock` that represented a holding of stock.
In this exercise, we will use that class.
### (a) Representation of Instances
### Exercise 5.1: Representation of Instances
At the interactive shell, inspect the underlying dictionaries of the two instances you created:
@@ -380,7 +380,7 @@ At the interactive shell, inspect the underlying dictionaries of the two instanc
>>>
```
### (b) Modification of Instance Data
### Exercise 5.2: Modification of Instance Data
Try setting a new attribute on one of the above instances:
@@ -412,7 +412,7 @@ top of a dictionary. *Note: it should be emphasized that direct
manipulation of the dictionary is uncommon—you should always write
your code to use the (.) syntax.*
### (c) The role of classes
### Exercise 5.3: The role of classes
The definitions that make up a class definition are shared by all instances of that class.
Notice, that all instances have a link back to their associated class:
@@ -517,7 +517,7 @@ It is shared by all of the instances that get created.
>>>
```
### (d) Bound Methods
### Exercise 5.4: Bound Methods
A subtle feature of Python is that invoking a method actually involves
two steps and something known as a bound method.
@@ -568,7 +568,7 @@ For example, calling `s(25)` actually does this:
>>>
```
### (e) Inheritance
### Exercise 5.5: Inheritance
Make a new class that inherits from `Stock`.
@@ -617,4 +617,5 @@ Heres how the `cost()` method of instance `n` above would be found:
>>>
```
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