[Handshake and Clock]: Corrected Formatting & Edited Instructions Appends for Clarity (#4216)

* Corrected formatting and edited instructions append for clarity.

* Update exercises/practice/clock/.docs/instructions.append.md

Author: BethanyG

exercises/practice/clock/.docs/instructions.append.md

@@ -1,11 +1,18 @@
 # Instructions append
 
-The tests for this exercise expect your clock will be implemented via a Clock `class` in Python.
-If you are unfamiliar with classes in Python, [classes][classes in python] from the Python docs is a good place to start.
+
+## How this exercise is implemented for the Python track
+
+
+The tests for this exercise expect that your clock will be implemented in a Clock `class`.
+If you are unfamiliar with classes in Python, [concept:python/classes]() and [classes][classes in python] (_from the Python docs_) are good places to start.
+
+
 ## Representing your class
 
-When working with and debugging objects, it's important to have a string representation of that object.
-For example, if you were to create a new `datetime.datetime` object in the Python [REPL][REPL] environment, you could see its string representation:
+When working with and debugging [objects][what-is-an-object], it's important to have a good representation of that object.
+For example — if you were to create a new [`datetime.datetime`][datetime] object in the Python [REPL][REPL] environment, you could view its [string representation][str-rep-classes]:
+
 
 ```python
 >>> from datetime import datetime
@@ -14,57 +21,71 @@ For example, if you were to create a new `datetime.datetime` object in the Pytho
 datetime.datetime(2022, 5, 4, 0, 0)
 ```
 
-Your Clock `class` will create a custom `object` that handles times without dates.
+Your Clock `class` should create a custom `object` that handles times _without_ dates.
 One important aspect of this `class` will be how it is represented as a _string_.
-Other programmers who use or call Clock `objects` created from the Clock `class` will refer to this string representation for debugging and other activities.  
-However, the default string representation on a `class` is usually not very helpful.
+Other programmers who use or call Clock `objects` created from the Clock `class` will refer to this string representation for debugging and other activities.
+However, the default representation on a custom `class` is not very helpful:
+
 
 ```python
 >>> Clock(12, 34)
 <Clock object st 0x102807b20 >
 ```
 
-To create a more helpful representation, you can define a `__repr__` method on the `class` that returns a string.
+To create a more helpful representation, you can define a [`__repr__`][repr-method] [special method][dunder-methods] on the `class`.
 
-Ideally, the `__repr__` method returns valid Python code that can be used to recreate the object -- as laid out in the [specification for a `__repr__` method][repr-docs].
-Returning valid Python code allows you to copy-paste the `str` directly into code or the REPL.
+Ideally, that `__repr__` method returns valid Python code that can be used to recreate the object when passed to [`eval()`][eval-built-in] — as laid out in the [specification for a `__repr__` method][repr-docs].
+Returning valid Python code allows another developer to copy-paste the `str` directly into code or the REPL.
+A `Clock` that represents 11:30 AM could look like this:
 
-For example, a `Clock` that represents 11:30 AM could look like this: `Clock(11, 30)`.
+```python
+ `Clock(11, 30)`
+```
 
-Defining a `__repr__` method is good practice for all classes.
-Some things to consider:
+Defining a `__repr__` method is good practice for all custom classes.
+Some additional things to consider:
 
 - The information returned from this method should be beneficial when debugging issues.
-- _Ideally_, the method returns a string that is valid Python code -- although that might not always be possible.
+- _Ideally_, the method returns a string that is valid Python code — although that might not always be possible.
 - If valid Python code is not practical, returning a description between angle brackets: `< ...a practical description... >` is the convention.
 
 
 ### String conversion
 
 In addition to the `__repr__` method, there might also be a need for an alternative "human-readable" string representation of the `class`.
 This might be used to format the object for program output or documentation.
+This is done by writing a [`__str__`][str-dunder] special method.
 Looking at `datetime.datetime` again:
 
+
 ```python
 >>> str(datetime.datetime(2022, 5, 4))
 '2022-05-04 00:00:00'
 ```
 
 When a `datetime` object is asked to convert itself to a string representation, it returns a `str` formatted according to the [ISO 8601 standard][ISO 8601], which can be parsed by most datetime libraries into a human-readable date and time.
 
-In this exercise, you will get a chance to write a `__str__` method, as well as a `__repr__`.
+In this exercise, you will get a chance to write a `__str__` method for your Clock, as well as a `__repr__` method.
 
 ```python
 >>> str(Clock(11, 30))
 '11:30'
 ```
 
-To support this string conversion, you will need to create a `__str__` method on your class that returns a more "human readable" string showing the Clock time.
+To support this string conversion, you will need to create a `__str__` special method on your `class` that returns a more "human-readable" string showing the Clock time.
 
-If you don't create a `__str__` method and you call `str()` on your class, python will try calling `__repr__` on your class as a fallback. So if you only implement one of the two, it would be better to create a `__repr__` method.
+If you don't create a `__str__` method and you call `str()` on your class, Python will try calling `__repr__` on your class as a fallback.
+So if you only implement one of these two special methods, it would be better to create a `__repr__` rather than just a `__str__`.
 
-[repr-docs]: https://docs.python.org/3/reference/datamodel.html#object.__repr__
-[classes in python]: https://docs.python.org/3/tutorial/classes.html
-[REPL]: https://pythonprogramminglanguage.com/repl/
-[ISO 8601]: https://www.iso.org/iso-8601-date-and-time-format.html
 
+[ISO 8601]: https://www.iso.org/iso-8601-date-and-time-format.html
+[REPL]: https://pythonprogramminglanguage.com/repl/
+[classes in python]: https://docs.python.org/3/tutorial/classes.html
+[datetime]: https://docs.python.org/3/library/datetime.html#available-types
+[dunder-methods]: https://www.pythonmorsels.com/every-dunder-method/
+[eval-built-in]: https://docs.python.org/3/library/functions.html#eval
+[repr-docs]: https://docs.python.org/3/reference/datamodel.html#object.__repr__
+[repr-method]: https://docs.python.org/3/library/functions.html#repr
+[str-dunder]: https://docs.python.org/3/reference/datamodel.html#object.__str__
+[str-rep-classes]: https://www.digitalocean.com/community/tutorials/python-str-repr-functions#introduction
+[what-is-an-object]: https://realpython.com/ref/glossary/object/

exercises/practice/secret-handshake/.docs/instructions.append.md

@@ -1,6 +1,9 @@
-To keep things simple (and to let you focus on the important part of this exercise), your function will receive its inputs as binary strings:
+# Instructions Append
 
-```
+
+To keep things simple (_and to let you focus on the important part of this exercise_), the tests will supply your function with _binary strings_ as arguments:
+
+```python
 >>> commands("00011")
 ["wink", "double blink"]
 ```