Django return method parameter

Question

I was watching a tutorial on django and the guy added the following line of code, however he didnt exactly explain what it does.

return '%s - %s' django

the full code line is:

def __str__(self):
    return '%s - %s' % (self.post, self.author)

and i do understand it, just not that return part. Anyone mind clearing it out for me.

You construct a string, and then you return this, this is thus the result of calling the .__str__() method. — willeM_ Van Onsem
– willeM_ Van Onsem, Commented Jul 1, 2021 at 16:46

Adam Minas · Accepted Answer · 2021-07-01 17:26:26Z

1

This can be found in models sometimes. It helps during debugging - when you print this object, it will call __str__ and return that instead of some random print message like Something object at 0xsomeadress.

Print will call the __str__ function on an object to retrieve a string representation which it will later on output to stdout.

It is also useful when using the UI that Django generates, as it shows the message that is returned by __str__.

answered Jul 1, 2021 at 17:26

Adam Minas

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2 Comments

Rodrigo Over a year ago

the str method i understand, my question with the { '%s - %s' } part of the code.

Adam Minas Over a year ago

That's just substitution - each %s is substituted by each variable after the %, one by one.

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