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Basic Object-Oriented Python

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__eq__

2:39 with Megan Amendola

Tackle equal comparisons between two objects.

Comparison Built-in Methods - Python Docs

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    Comparisons are an important feature of programming. 0:00
    When it comes to comparing two objects you've created, 0:04
    Python will need to know what to do. 0:08
    For example, using our car class, how would two instances compare? 0:12
    Let's just stick with equals right now. 0:21
    What would make two car instances equal? 0:24
    Is it matching makes and models or matching makes, models and years? 0:28
    Let's just keep it to makes and models. 0:34
    We'll need to add the Dunder method that handles equal comparisons to our 0:37
    car class, it's Dunder equals. 0:42
    It takes self and other which is the thing you're comparing it to. 0:56
    Inside the method, let's check if the make and models are equal and return it. 1:02
    This will give us the true or 1:24
    false boolean value the comparison is looking for. 1:26
    Let's test it out with an if statement. 1:30
    If one instance is equal to another, 1:33
    we can print out a message saying they're equal. 1:35
    Otherwise, print out a message saying they're not equal. 1:39
    So with our two instances right now, we get not equal when the file is run. 2:04
    But if we switch out the make and model to be equal, 2:12
    Run it again. 2:22
    We get equal. 2:29
    Try this out on your own by creating a new class, adding an equal method, and 2:31
    testing it out with some comparisons. 2:36

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