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