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matusf committed Jul 17, 2023
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10 changes: 5 additions & 5 deletions Exercises/README.md
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Expand Up @@ -13,18 +13,18 @@ This course requires the use of Python 3.6 or newer. If you are
using Python 2, most of the material still applies, but you will
have to make minor code modifications here and there.

- link:PythonMastery.pdf[`PythonMastery.pdf`] is a PDF that contains
- [`PythonMastery.pdf`](../PythonMastery.pdf) is a PDF that contains
all of the presentation slides.

- The link:Exercises/index.html[`Exercises/`] folder is where you
- The [`Exercises/`](index.md) folder is where you
find all the class exercises.

- The `Data/` folder is where you find data files, scripts, and
- The [`Data/`](../Data/) folder is where you find data files, scripts, and
other files used by the exercises.

- The `Solutions/` folder contains complete solution code for
- The [`Solutions/`](../Solutions/) folder contains complete solution code for
various exercises. Each problem has its own directory. For example,
the solution to exercise 3.2 can be found in the `Solution/3_2/` directory.
the solution to exercise 3.2 can be found in the [`Solutions/3_2/`](../Solutions/3_2/) directory.

Every attempt has been made to make sure exercises work. However, it's
possible that you will find typos or minor mistakes. If you find any
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2 changes: 1 addition & 1 deletion Exercises/ex2_3.md
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Expand Up @@ -310,7 +310,7 @@ you do need to make sure you don't go overboard with the syntax.

## (f) Saving a lot of memory

In link:ex2_1.html[Exercise 2.1] you wrote a function
In [Exercise 2.1](ex2_1.md) you wrote a function
`read_rides_as_dicts()` that read the CTA bus data into a list of
dictionaries. Using it requires a lot of memory. For example,
let's find the day on which the route 22 bus had the greatest
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4 changes: 2 additions & 2 deletions Exercises/ex3_1.md
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Expand Up @@ -8,7 +8,7 @@

*Files Modified:* `stock.py`

In link:ex1_5.html[Exercise 1.5], you defined a simple class
In [Exercise 1.5](ex1_5.md), you defined a simple class
`Stock` for representing a holding of stock. In this exercise,
we're simply going to add a few features to that class as well as
write some utility functions.
Expand Down Expand Up @@ -49,7 +49,7 @@ reads a file of portfolio data into a list of `Stock` objects. Here's how it sho
```

You already wrote a similar function as part of
link:ex2_3.html[Exercise 2.3]. Design discussion: Should
[Exercise 2.3](ex2_3.md). Design discussion: Should
`read_portfolio()` be a separate function or part of the class
definition?

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2 changes: 1 addition & 1 deletion Exercises/ex3_2.md
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Expand Up @@ -66,7 +66,7 @@ price 490.1

## (c) Table Output

In link:ex3_1.html[Exercise 3.1], you wrote a function `print_portfolio()`
In [Exercise 3.1](ex3_1.md), you wrote a function `print_portfolio()`
that made a nicely formatted table. That function was custom tailored
to a list of `Stock` objects. However, it can be completely generalized
to work with any list of objects using the technique in part (b).
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2 changes: 1 addition & 1 deletion Exercises/ex3_5.md
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Expand Up @@ -13,7 +13,7 @@ CSV, and HTML.

One major use of classes in Python is in writing code that be
extended/adapted in various ways. To illustrate, in
link:ex3_2.html[Exercise 3.2] you created a function `print_table()`
[Exercise 3.2](ex3_2.md) you created a function `print_table()`
that made tables. You used this to make output from the `portfolio`
list. For example:

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2 changes: 1 addition & 1 deletion Exercises/ex3_6.md
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Expand Up @@ -98,7 +98,7 @@ Make this change and try comparing two objects again.

## (c) A Context Manager

In link:ex3_5.html[Exercise 3.5], you made it possible for users to make
In [Exercise 3.5](ex3_5.md), you made it possible for users to make
nicely formatted tables. For example:

```python
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2 changes: 1 addition & 1 deletion Exercises/ex3_7.md
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Expand Up @@ -9,7 +9,7 @@

*Files Modified:* `tableformat.py`

In link:ex3_5.html[Exercise 3.5], we modified the `tableformat.py` file to have a `TableFormatter`
In [Exercise 3.5](ex3_5.md), we modified the `tableformat.py` file to have a `TableFormatter`
class and to use various subclasses for different output formats. In this exercise, we extend that
code a bit more.

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4 changes: 2 additions & 2 deletions Exercises/ex3_8.md
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Expand Up @@ -10,7 +10,7 @@

## (a) The Trouble with Column Formatting

If you go all the way back to link:ex3_1.txt[Exercise 3.1], you
If you go all the way back to [Exercise 3.1](ex3_1.md), you
wrote a function `print_portfolio()` that produced a table like this:

```python
Expand Down Expand Up @@ -204,7 +204,7 @@ different ways.
Using mixins can be a useful tool for framework builders for reducing
the amount of code that needs to be written. However, forcing users
to remember how to properly compose classes and use multiple inheritance can
fry their brains. In link:ex3_5.html[Exercise 3.5], you wrote a
fry their brains. In [Exercise 3.5](ex3_5.md), you wrote a
function `create_formatter()` that made it easier to create a custom
formatter. Take that function and extend it to understand a few optional
arguments related to the mixin classes. For example:
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2 changes: 1 addition & 1 deletion Exercises/ex4_2.md
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Expand Up @@ -123,7 +123,7 @@ the end of the MRO since it is the parent to all of the classes being composed t

## (b) Build a Value Checker

In link:ex3_4.html[Exercise 3.4], you added some properties to the `Stock` class that
In [Exercise 3.4](ex3_4.md), you added some properties to the `Stock` class that
checked attributes for different types and values (e.g., shares had to be a positive
integer). Let's play with that idea a bit. Start by creating a file `validate.py` and
defining the following base class:
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2 changes: 1 addition & 1 deletion Exercises/ex6_1.md
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Expand Up @@ -16,7 +16,7 @@ sane way. Before doing anything, copy your work in `stock.py` to a new file
`orig_stock.py`.

We're going to recreate the `Stock` class from scratch using some new techniques.
Make sure you have your unit tests from link:ex5_4.html[Exercise 5.4] handy. You'll want those.
Make sure you have your unit tests from [Exercise 5.4](ex5_4.md) handy. You'll want those.

If you define a function, you probably already know that it can be
called using a mix of positional or keyword arguments. For example:
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4 changes: 2 additions & 2 deletions Exercises/ex6_3.md
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Expand Up @@ -63,7 +63,7 @@ mappingproxy(OrderedDict([('x', <Parameter "x">), ('y', <Parameter "y">)]))

## (c) Putting it Together

In link:ex6_1.html[Exercise 6.1], you created a class `Structure`
In [Exercise 6.1](ex6_1.md), you created a class `Structure`
that defined a generalized `__init__()`, `__setattr__()`, and `__repr__()`
method. That class required a user to define a `_fields` class
variable like this:
Expand All @@ -75,7 +75,7 @@ class Stock(Structure):

The problem with this class is that the `__init__()` function didn't
have a useful argument signature for the purposes of help and
keyword argument passing. In link:ex6_2.html[Exercise 6.2], you
keyword argument passing. In [Exercise 6.2](ex6_2.md), you
did a sneaky trick involving a special `self._init()` function. For example:

```python
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4 changes: 2 additions & 2 deletions Exercises/ex6_4.md
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Expand Up @@ -60,7 +60,7 @@ There are no weird hacks involving a special `_init()` method or stack frames.

## (b) Creating an `__init__()` function

In link:ex6_3.txt[Exercise 6.3], you wrote code that inspected the
In [Exercise 6.3](ex6_3.md), you wrote code that inspected the
signature of the `__init__()` method to set the attribute names
in a `_fields` class variable. For example:

Expand Down Expand Up @@ -108,7 +108,7 @@ methods on the `Structure` class--that approach was kind of weird.

## (c) Named Tuples

In link:ex2_1.html[Exercise 2.1], you experimented with `namedtuple` objects
In [Exercise 2.1](ex2_1.md), you experimented with `namedtuple` objects
in the `collections` module. Just to refresh your memory, here is how
they worked:

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4 changes: 2 additions & 2 deletions Exercises/ex7_3.md
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Expand Up @@ -14,7 +14,7 @@ developed over the last few days. Hang on to your hat.

## (a) Descriptors Revisited

In link:ex4_3.html[Exercise 4.3] you defined some descriptors that
In [Exercise 4.3](ex4_3.md) you defined some descriptors that
allowed a user to define classes with type-checked attributes like
this:

Expand All @@ -29,7 +29,7 @@ class Stock:
```

Modify your `Stock` class so that it includes the above descriptors
and now looks like this (see link:ex6_4.html[Exercise 6.4]):
and now looks like this (see [Exercise 6.4](ex6_4.md)):

```python
# stock.py
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2 changes: 1 addition & 1 deletion Exercises/ex7_6.md
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Expand Up @@ -11,7 +11,7 @@

## (a) The Final Frontier

In link:ex7_3.html[Exercise 7.3], we made it possible to define type-checked structures as follows:
In [Exercise 7.3](ex7_3.md), we made it possible to define type-checked structures as follows:

```python
from validate import String, PositiveInteger, PositiveFloat
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6 changes: 3 additions & 3 deletions Exercises/ex8_3.md
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Expand Up @@ -13,7 +13,7 @@
For this exercise the `stocksim.py` program should still be
running in the background.

In link:ex8_2.html[Exercise 8.2] you wrote some code that used
In [Exercise 8.2](ex8_2.md) you wrote some code that used
generators to set up a processing pipeline. A key aspect of that
program was the idea of data flowing between generator functions. A
very similar kind of dataflow can be set up using coroutines. The
Expand All @@ -24,7 +24,7 @@ processing elements as opposed to pulling data out with a for-loop.

Getting started with coroutines can be a little tricky. Here is an
example program that performs the same task as
link:ex8_2.html[Exercise 8.2], but with coroutines. Take this program
[Exercise 8.2](ex8_2.md), but with coroutines. Take this program
and copy it into a file called `cofollow.py`.

```python
Expand Down Expand Up @@ -71,7 +71,7 @@ Run this program and make sure produces output.. Make sure you understand how
## (b) Build some pipeline components

In a file `coticker.py`, build a series of pipeline components that carry out the same tasks as
the `ticker.py` program in link:ex8_2.html[Exercise 8.2]. Here is the implementation of the
the `ticker.py` program in [Exercise 8.2](ex8_2.md). Here is the implementation of the
various pieces.

```python
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4 changes: 2 additions & 2 deletions Exercises/ex8_6.md
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Expand Up @@ -19,7 +19,7 @@ clean-up code that relies on generators.

## (a) Example: Receiving messages

In link:ex8_3.html[Exercise 8.3], we looked at the definitions of coroutines.
In [Exercise 8.3](ex8_3.md), we looked at the definitions of coroutines.
Coroutines were functions that you sent data to. For example:

```python
Expand Down Expand Up @@ -80,7 +80,7 @@ is a bit more descriptive--it indicates that the function will yield until
it receives a message of a given type.

Now, modify all of the coroutines in `coticker.py` to use the new `receive()`
function and make sure the code from link:ex8_3.html[Exercise 8.3] still
function and make sure the code from [Exercise 8.3](ex8_3.md) still
works.

## (b) Wrapping a Socket
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