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Title: Make the Maze Self-Contained (Video) – Real Python

Open Graph Title: Make the Maze Self-Contained – Real Python

Description: Making Maze Self-Contained. To make your Maze class more self-contained, you may augment it with .load() and .dump() methods that will delegate processing to their respective counterparts in the serializer module. However, doing so without any…

Open Graph Description: Making Maze Self-Contained. To make your Maze class more self-contained, you may augment it with .load() and .dump() methods that will delegate processing to their respective counterparts in the serializer module. However, doing so without any…

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00:00https://realpython.com/lessons/python-self-contained-maze/#t=0.58
Making Maze Self-Contained.https://realpython.com/lessons/python-self-contained-maze/#t=0.58
To make your Maze class morehttps://realpython.com/lessons/python-self-contained-maze/#t=2.976
self-contained,https://realpython.com/lessons/python-self-contained-maze/#t=5.43
you may augment it with .load() and .dump() methods that will delegate processing tohttps://realpython.com/lessons/python-self-contained-maze/#t=6.57
their respective counterparts in the serializer module.https://realpython.com/lessons/python-self-contained-maze/#t=11.11
00:14https://realpython.com/lessons/python-self-contained-maze/#t=14.613
However,https://realpython.com/lessons/python-self-contained-maze/#t=14.613
doing so without any modifications would inevitably lead to the dreaded circularhttps://realpython.com/lessons/python-self-contained-maze/#t=15.28
dependency, which Python doesn’t allow.https://realpython.com/lessons/python-self-contained-maze/#t=19.72
You can’t have your class depend on functions in another module and the otherhttps://realpython.com/lessons/python-self-contained-maze/#t=22.53
way round at the same time.https://realpython.com/lessons/python-self-contained-maze/#t=26.11
00:29https://realpython.com/lessons/python-self-contained-maze/#t=29.68
There are a few ways to work around this problem,https://realpython.com/lessons/python-self-contained-maze/#t=29.68
and each has its pros and cons.https://realpython.com/lessons/python-self-contained-maze/#t=32.13
The most elegant solution is to break the two-way dependency in one direction.https://realpython.com/lessons/python-self-contained-maze/#t=34.61
00:39https://realpython.com/lessons/python-self-contained-maze/#t=39.91
Since you want to call the serializing code from within your class,https://realpython.com/lessons/python-self-contained-maze/#t=39.91
removing all Maze class references from the serializer module is the onlyhttps://realpython.com/lessons/python-self-contained-maze/#t=43.78
option.https://realpython.com/lessons/python-self-contained-maze/#t=47.74
00:50https://realpython.com/lessons/python-self-contained-maze/#t=50.86
Start refactoring the code by deleting the import statement of Maze from thehttps://realpython.com/lessons/python-self-contained-maze/#t=50.86
serializer module.https://realpython.com/lessons/python-self-contained-maze/#t=55.05
01:04https://realpython.com/lessons/python-self-contained-maze/#t=64.12
As soon as you do that,https://realpython.com/lessons/python-self-contained-maze/#t=64.12
your code editor should flag all unresolved Maze class references in the module.https://realpython.com/lessons/python-self-contained-maze/#t=65.61
You can see the first one in the dump() function at the top of the file.https://realpython.com/lessons/python-self-contained-maze/#t=71.49
01:15https://realpython.com/lessons/python-self-contained-maze/#t=75.98
The function currently accepts a maze object as an argument.https://realpython.com/lessons/python-self-contained-maze/#t=75.98
You can replace this with intermediary data transfer objects, such as Pythonhttps://realpython.com/lessons/python-self-contained-maze/#t=79.26
built-in types or other models.https://realpython.com/lessons/python-self-contained-maze/#t=83.56
01:26https://realpython.com/lessons/python-self-contained-maze/#t=86.69
Rather than serializing a Maze instance,https://realpython.com/lessons/python-self-contained-maze/#t=86.69
you’ll now serialize its building blocks, which the Maze class can put backhttps://realpython.com/lessons/python-self-contained-maze/#t=89.13
together.https://realpython.com/lessons/python-self-contained-maze/#t=93.31
01:39https://realpython.com/lessons/python-self-contained-maze/#t=99.55
Notice that you renamed the function to convey its purpose more accurately byhttps://realpython.com/lessons/python-self-contained-maze/#t=99.55
emphasizing its new interface.https://realpython.com/lessons/python-self-contained-maze/#t=103.89
This change must also cascadehttps://realpython.com/lessons/python-self-contained-maze/#t=109.98
down to the serialize() function, while compress() and decompress() remainhttps://realpython.com/lessons/python-self-contained-maze/#t=111.35
intact.https://realpython.com/lessons/python-self-contained-maze/#t=116.21
02:50https://realpython.com/lessons/python-self-contained-maze/#t=170.22
With this update,https://realpython.com/lessons/python-self-contained-maze/#t=170.22
dump_squares() and serialize() have compatible function signatures once more.https://realpython.com/lessons/python-self-contained-maze/#t=171.54
You’ll modify your deserializing code in a similar way by getting rid of thehttps://realpython.com/lessons/python-self-contained-maze/#t=176.59
dependency on Maze from both load() and deserialize().https://realpython.com/lessons/python-self-contained-maze/#t=180.86
03:25https://realpython.com/lessons/python-self-contained-maze/#t=205.63
The loading function is now named load_squares() to follow a consistent naminghttps://realpython.com/lessons/python-self-contained-maze/#t=205.63
convention, and it returns an iterator of squares rather than a complete maze.https://realpython.com/lessons/python-self-contained-maze/#t=209.98
03:35https://realpython.com/lessons/python-self-contained-maze/#t=215.77
Additionally,https://realpython.com/lessons/python-self-contained-maze/#t=215.77
you simplified the other function, deserialize(), by turning it into a generatorhttps://realpython.com/lessons/python-self-contained-maze/#t=216.27
function, which returns a generator of Square instances.https://realpython.com/lessons/python-self-contained-maze/#t=221.21
04:20https://realpython.com/lessons/python-self-contained-maze/#t=260.04
You’re now free to make edits to the Maze class to reflect the changes you’vehttps://realpython.com/lessons/python-self-contained-maze/#t=260.04
performed in the serializer module,https://realpython.com/lessons/python-self-contained-maze/#t=263.78
and that’s what you’ll be looking at in the next section of the course.https://realpython.com/lessons/python-self-contained-maze/#t=265.52
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Mazes in Python: Build and Visualize 02:47 https://realpython.com/videos/python-maze-solver-part-1-overview/
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Preview the Rendered Maze and Its Solution 04:56 https://realpython.com/lessons/preview-python-maze/
Mazes in Python: Build and Visualize (Recap) 01:14 https://realpython.com/lessons/python-maze-solver-part-1-summary/
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Load the Maze From a Binary File 04:55 https://realpython.com/videos/python-maze-binary-file/
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Define the File Header and Body 08:12 https://realpython.com/lessons/python-maze-file-header-and-body/
Serialize the Maze 05:22 https://realpython.com/lessons/serialize-python-maze/
Deserialize the Maze 04:32 https://realpython.com/lessons/deserialize-python-maze/
Make the Maze Self-Contained 04:30 https://realpython.com/lessons/python-self-contained-maze/
Update the Maze Class 03:16 https://realpython.com/lessons/python-maze-class/
Solve the Maze Using a Graph-Based Approach 03:01 https://realpython.com/lessons/solve-python-maze-graph-based/
Transform the Maze Into a Graph 07:06 https://realpython.com/lessons/transform-python-maze-graph/
Find the Shortest Path 05:23 https://realpython.com/lessons/python-maze-shortest-path/
Add Weights to Graph Edges 02:36 https://realpython.com/lessons/python-map-weights-graph-edges/
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Make a Runnable Script 03:59 https://realpython.com/lessons/python-maze-runnable-script/
Mazes in Python: Store and Solve (Recap) 01:23 https://realpython.com/lessons/python-maze-solver-part-2-summary/
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