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Ever heard of Dunder methods (__init__, __repr__, __eq__, ...) in Python?You want to learn more about them?
This one is for you
Dunder methods are set of predefined methods that can enrich your classes.They're called dunder methods because of double under score at the beginning and at the end of their name
Class that implements them can mimic behavior of built-in types like int, str, list, ...
__init__ is the most used one.It's used to construct objects from class A - a constructor
You can define which arguments it takes
Inside it attributes of newly created instance are set
Change objects representation__str__ - this one is used when conversion to string is requested - printable representation
__repr__ - official representation, it's great if you can just copy it to your code to create new object with the same values
Operator overloading - enable object comparison__eq__ - a == b
__ne__ - a != b
__lt__ - a < b
__gt__ - a > b
__le__ - a <= b
__ge__ - a >= b
__add__ - a + b
...
You also need to implement them if you want to make your objects sortable
Make objects callableTo make object callable you need to implement __call__
Make a generator classYou need to implement __next__ and __iter__ methods
To access and set attributes the same way as for dictionary you can implement__getitem__ - a['key']
__setitem__ - a['key'] = 'value'
![To access and set attributes the same way as for dictionary you can implement__getitem__ - a['key']__setitem__ - a['key'] = 'value'](https://pbs.twimg.com/media/ErMe7BvU0AE3D2H.png "To access and set attributes the same way as for dictionary you can implement__getitem__ - a['key']__setitem__ - a['key'] = 'value'")
You can find all available methods and more about Python data model here:https://docs.python.org/3/reference/datamodel.html
Script with all of the examples: 
