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Title: Providing Multiple Constructors in Your Python Classes (Overview) (Video) – Real Python

Open Graph Title: Providing Multiple Constructors in Your Python Classes (Overview) – Real Python

Description: Providing Multiple Constructors in Your Python Classes. Sometimes you need to write a Python class that provides multiple ways to construct objects. In other words, you want a class that implements multiple constructors. This kind of class comes in…

Open Graph Description: Providing Multiple Constructors in Your Python Classes. Sometimes you need to write a Python class that provides multiple ways to construct objects. In other words, you want a class that implements multiple constructors. This kind of class comes in…

Opengraph URL: https://realpython.com/videos/multiple-constructors-python-overview/

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object-oriented programminghttps://realpython.com/python3-object-oriented-programming/
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00:00https://realpython.com/courses/multiple-constructors-python/continue/#t=0.43
Providing Multiple Constructors in Your Python Classes.https://realpython.com/courses/multiple-constructors-python/continue/#t=0.43
00:06https://realpython.com/courses/multiple-constructors-python/continue/#t=6.01
Sometimes you need to write a Python class that provides multiple ways tohttps://realpython.com/courses/multiple-constructors-python/continue/#t=6.01
construct objects. In other words,https://realpython.com/courses/multiple-constructors-python/continue/#t=10.05
you want a class that implements multiple constructors.https://realpython.com/courses/multiple-constructors-python/continue/#t=12.05
00:15https://realpython.com/courses/multiple-constructors-python/continue/#t=15.08
This kind of class comes in handy when you need to create instances usinghttps://realpython.com/courses/multiple-constructors-python/continue/#t=15.08
different types or numbers of arguments.https://realpython.com/courses/multiple-constructors-python/continue/#t=18.53
Having the tools to provide multiple constructors will help you write flexiblehttps://realpython.com/courses/multiple-constructors-python/continue/#t=21.3
classes that can adapt to changing needs. In Python,https://realpython.com/courses/multiple-constructors-python/continue/#t=25.15
there are several techniques and tools that you can use to construct classes,https://realpython.com/courses/multiple-constructors-python/continue/#t=29.97
including simulating multiple constructors through optional arguments,https://realpython.com/courses/multiple-constructors-python/continue/#t=33.21
customizing instance creation via class methods,https://realpython.com/courses/multiple-constructors-python/continue/#t=37.91
and doing special dispatch with decorators.https://realpython.com/courses/multiple-constructors-python/continue/#t=41.98
00:46https://realpython.com/courses/multiple-constructors-python/continue/#t=46.96
If you want to learn about these techniques and tools,https://realpython.com/courses/multiple-constructors-python/continue/#t=46.96
then this course is for you. In this course,https://realpython.com/courses/multiple-constructors-python/continue/#t=49.15
you’ll learn how to simulate multiple constructors with optional arguments andhttps://realpython.com/courses/multiple-constructors-python/continue/#t=52.1
type checking,https://realpython.com/courses/multiple-constructors-python/continue/#t=56.78
write multiple constructors using the built-in @classmethod decorator, andhttps://realpython.com/courses/multiple-constructors-python/continue/#t=57.78
overload your class constructors using the @singledispatchmethod decorator.https://realpython.com/courses/multiple-constructors-python/continue/#t=62.97
01:07https://realpython.com/courses/multiple-constructors-python/continue/#t=67.06
You’ll also get a look under the hood at how Python internally constructshttps://realpython.com/courses/multiple-constructors-python/continue/#t=67.06
instances of a regular class and how some standard-library classes providehttps://realpython.com/courses/multiple-constructors-python/continue/#t=70.91
multiple constructors. To get the most out of this course,https://realpython.com/courses/multiple-constructors-python/continue/#t=75.19
you should have basic knowledge of object-oriented programming and understandhttps://realpython.com/courses/multiple-constructors-python/continue/#t=79.88
how to define class methods with the @classmethod decorator.https://realpython.com/courses/multiple-constructors-python/continue/#t=83.64
01:27https://realpython.com/courses/multiple-constructors-python/continue/#t=87.23
You should also have experience working with decorators in Python. As ever,https://realpython.com/courses/multiple-constructors-python/continue/#t=87.23
Real Python has you coveredhttps://realpython.com/courses/multiple-constructors-python/continue/#t=91.88
if you need to learn more about these subjects, with this course covering object-https://realpython.com/courses/multiple-constructors-python/continue/#t=93.28
oriented programming, this one covering class methods,https://realpython.com/courses/multiple-constructors-python/continue/#t=97.36
and this one for decorators.https://realpython.com/courses/multiple-constructors-python/continue/#t=103.85
01:48https://realpython.com/courses/multiple-constructors-python/continue/#t=108.17
In this course,https://realpython.com/courses/multiple-constructors-python/continue/#t=108.17
any code you see running in the REPL will be using the bpython REPL.https://realpython.com/courses/multiple-constructors-python/continue/#t=108.92
It offers a number of improvements over the standard REPL,https://realpython.com/courses/multiple-constructors-python/continue/#t=112.73
such as color-coding,https://realpython.com/courses/multiple-constructors-python/continue/#t=115.68
but all of the code you see will run in the standard Python REPL,https://realpython.com/courses/multiple-constructors-python/continue/#t=116.7
which is typically launched by typing python in a terminal window.https://realpython.com/courses/multiple-constructors-python/continue/#t=120.0
02:05https://realpython.com/courses/multiple-constructors-python/continue/#t=125.85
So now you know what’s going to be covered in the course, let’s get started.https://realpython.com/courses/multiple-constructors-python/continue/#t=125.85
Jan. 24, 2024https://realpython.com/courses/multiple-constructors-python/continue/#comment-d731ccc8-238e-4a41-bf76-c8553674d83f
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https://realpython.com/videos/instantiating-classes/
Providing Multiple Constructors in Your Python Classes (Overview) 02:10 https://realpython.com/videos/multiple-constructors-python-overview/
Instantiating Classes 04:55 https://realpython.com/videos/instantiating-classes/
Defining Multiple Constructors 03:47 https://realpython.com/lessons/defining-multiple-constructors/
Simulating Multiple Constructors 00:58 https://realpython.com/lessons/simulating-multiple-constructors/
Using Optional Arguments 04:08 https://realpython.com/lessons/optional-arguments/
Checking Argument Types 04:09 https://realpython.com/lessons/checking-argument-types/
Using @classmethod for Multiple Class Constructors 02:18 https://realpython.com/lessons/classmethod-multiple-constructors/
Constructing a Circle From Its Diameter 04:10 https://realpython.com/lessons/constructing-circle-from-diameter/
Building a Polar Point From Cartesian Coordinates 02:19 https://realpython.com/lessons/polar-point-cartesian-coordinates/
Exploring Multiple Constructors in Existing Python Classes 05:49 https://realpython.com/lessons/multiple-constructors-existing-python-classes/
Using @singledispatchmethod for Multiple Class Constructors 03:39 https://realpython.com/lessons/singledispatchmethod-multiple-class-constructors/
Using the Single-Dispatch Method in the Real World 04:57 https://realpython.com/lessons/single-dispatch-method-example/
Providing Multiple Constructors in Your Python Classes (Summary) 01:08 https://realpython.com/lessons/multiple-constructors-python-summary/
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