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invent those as well let me propose
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though that we now introduce one other
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aspect of this whereby we try printing
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out what a student looks like at the
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moment if I scroll back down to my main
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function I'm still printing the
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student's name and house very manually
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I'm going inside of the object doing
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student. name and I'm going inside of
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the object again and getting student.
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house just to see where uh the student
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is from but wouldn't it be nice if I
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could just print the student like I've
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been PR printing for weeks any int or
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float or stir or any other data type
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well let's see what happens if I just
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try printing the student instead of
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manually going inside and trying to
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create that sentence myself well in my
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terminal window let me go ahead and run
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python of student. again let me type in
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Harry let me type in Gryffindor and we
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voila Harry whoa okay main student
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object at o x102 733
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e80 well what is going on well if you
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were to run the same code you might
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actually see something different on your
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computer in terms of that number but
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what you're really seeing is the
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underlying representation as a string of
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this specific object in particular
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you're seeing where in the computer's
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memory it is this number o x102 733 e80
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refers to essentially a specific
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location in the computer's memory or Ram
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that's not really that interesting for
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me or you or generally speaking
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programmers but it's just a default way
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of describing via print what this thing
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uh is but I can override this as well it
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turns out that there are other special
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methods in Python when it comes to
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classes not just underscore underscore
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in it underscore underscore But
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continuing in that same pattern
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underscore underscore stir underscore
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underscore so this too is a special
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method that if you define it inside of
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your class python will just
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automatically call this function for you
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anytime some other function wants to see
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your object as a string print wants to
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see your F your object as a string but
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by default if you don't have this method
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defined in your class it's going to
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print out that very ugly esoteric
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Incarnation thereof where it says main.
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student object at Ox dot dot dot well
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how can I then Define my own stir
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function well here back in VSS code let
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me propose that I go in and Define not
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just underscore underscore uh in it but
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let me Define a second function in this
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class here as follows decore uncore stir
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6
underscore underscore there are indeed
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two even though the font in VSS code is
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putting the two underscore so close it
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just looks like a longer underscore
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there are indeed two there on the left
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and the right just like for in it this
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one only takes one argument that by
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convention is always called self so that
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you have access to it and then indented
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below that after a colon I'm going to go
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ahead and create a format string and
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return it so let me go ahead and return
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how about something gener generic first
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like a student so I'm not going to
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bother even trying to figure out what
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this Student's name or house is I'm just
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going to always return a student let me
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go back now to my earlier code which has
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print student on line 16 Let Me Clear My
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terminal window and rerun python of
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studenty enter type in Harry type in
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Gryffindor last time I saw that very
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cryptic output this time I see more
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generically a student you know more
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readable but not very enlightening which
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student is this well notice that the uh
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double underscore stir method takes in
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this self argument by default it's just
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the way the python authors designed this
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method it will always be passed a
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reference to the current student object
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what do I mean by that when this line of
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code on line six is called print because
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it's hoping it's going to get a string
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is going to trigger the underscore
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uncore stir underscore uncore method to
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