text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
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and it's called exactly this this is | 2,425.24 | 3.92 |
designed by the authors of python and if | 2,427.079 | 5.441 |
you want to initialize the contents of | 2,429.16 | 6 |
an object from a class you define this | 2,432.52 | 4.16 |
method and we'll see what it's about to | 2,435.16 | 4.36 |
do here let me go back to vs code and | 2,436.68 | 6 |
let me do something like this self. name | 2,439.52 | 8.44 |
equals name and self. house equals house | 2,442.68 | 7.12 |
but I don't want to just init this | 2,447.96 | 4.04 |
object very generically I want this | 2,449.8 | 5.08 |
method called in it to take in not just | 2,452 | 6.599 |
self but name comma house as well now | 2,454.88 | 5.12 |
what in the world is going on because | 2,458.599 | 3 |
there's a lot of weird syntax here | 2,460 | 3.599 |
there's this Dunder init method double | 2,461.599 | 4.201 |
underscore in it double underscore | 2,463.599 | 4.081 |
there's all of a sudden this parameter | 2,465.8 | 3.84 |
called self and then there's this new | 2,467.68 | 5.159 |
syntax self. name and self. house now | 2,469.64 | 5.24 |
you're seeing really a manifestation of | 2,472.839 | 4.321 |
objectoriented programming it's not all | 2,474.88 | 3.52 |
that different fundamentally from what | 2,477.16 | 2.48 |
we've been doing for weeks with | 2,478.4 | 3.76 |
dictionaries by adding keys to | 2,479.64 | 4.6 |
dictionaries but in this case we're | 2,482.16 | 6.199 |
adding variables to to objects AKA | 2,484.24 | 6.48 |
instance variables to objects now what's | 2,488.359 | 4.201 |
going on let's do this in Reverse let's | 2,490.72 | 3.24 |
go back to the line of code we wrote | 2,492.56 | 4.559 |
earlier on line 15 I am treating the | 2,493.96 | 5.72 |
name of this class student with a | 2,497.119 | 6.401 |
capital S as a function and I am passing | 2,499.68 | 6.639 |
in two values name and house what I've | 2,503.52 | 4.2 |
highlighted here on the screen on line | 2,506.319 | 4.321 |
15 is generally known as a Constructor | 2,507.72 | 5.28 |
call this is a line of code that is | 2,510.64 | 5.56 |
going to construct a student object form | 2,513 | 6.119 |
for me using synonyms it is going to | 2,516.2 | 7 |
instantiate a student object for me and | 2,519.119 | 6.041 |
again how is it going to create that | 2,523.2 | 3.56 |
object it's going to use the student | 2,525.16 | 4.32 |
class as a template as a mold of sorts | 2,526.76 | 5.04 |
so that every student is structured the | 2,529.48 | 3.96 |
same every student is going to have a | 2,531.8 | 2.96 |
name every student's going to have a | 2,533.44 | 4.36 |
house but because I can pass in | 2,534.76 | 5 |
arguments to this student function | 2,537.8 | 4.68 |
capital S I'm going to be able to | 2,539.76 | 7.04 |
customize the contents of that object so | 2,542.48 | 5.76 |
if you think about the real world if | 2,546.8 | 3 |
you've ever been on a street or a | 2,548.24 | 3.44 |
neighborhood where all of the houses | 2,549.8 | 4.799 |
kind of look the same but they're might | 2,551.68 | 4.52 |
be painted differently they might be | 2,554.599 | 2.96 |
decorated a little bit differently on | 2,556.2 | 3.28 |
the outside all of those houses might | 2,557.559 | 3.681 |
have been built using the exact same | 2,559.48 | 4.68 |
blueprint sort of a mold if you will but | 2,561.24 | 4.92 |
then you can specialize exactly the | 2,564.16 | 4.36 |
finer points of those houses by painting | 2,566.16 | 3.6 |
the outside a different color or | 2,568.52 | 3.12 |
planting different trees you can style | 2,569.76 | 4.799 |
them differently similar uh in spirit | 2,571.64 | 5.16 |
here we have a student | 2,574.559 | 4.361 |
blueprint that's always going to have | 2,576.8 | 4.2 |
now a name and a house but it's up to | 2,578.92 | 4 |
you and me to pass in any name in any | 2,581 | 4.24 |
house that we want now where is this | 2,582.92 | 4 |
function the fact that I'm calling | 2,585.24 | 3.76 |
student capital S and then a parenthesis | 2,586.92 | 3.88 |
and a Clos parenthesis with arguments | 2,589 | 3.48 |
inside suggests that there's a function | 2,590.8 | 3.6 |
somewhere in the world that has been | 2,592.48 | 4.24 |
defined with de that's going to be | 2,594.4 | 4.64 |
called well as you might have guessed by | 2,596.72 | 4.839 |
now the function that will always be | 2,599.04 | 5.279 |
called by definition of how python | 2,601.559 | 5.961 |
classes work is a fun called double | 2,604.319 | 6.081 |
underscore in it double underscore why | 2,607.52 | 4.76 |
it's a crazy name but it's what the | 2,610.4 | 4.199 |
authors of python chose to just | 2,612.28 | 3.799 |
implement the | 2,614.599 | 4.361 |
initialization of an object in Python | 2,616.079 | 5.201 |
now the only weird thing especially | 2,618.96 | 4.32 |
weird thing I will admit is this it | 2,621.28 | 4.92 |
would be way clearer to me too if the | 2,623.28 | 5.96 |
only two parameters for in it were just | 2,626.2 | 4.84 |
name comma house right that's how we've | 2,629.24 | 3.8 |
defined every function thus far in the | 2,631.04 | 4.4 |
class you just specify the parameters | 2,633.04 | 4.519 |
that you want the function to accept and | 2,635.44 | 3.76 |
indeed that lines up with what I'm doing | 2,637.559 | 4.401 |
on line 15 I am only passing in two | 2,639.2 | 6.32 |
things to the student function but it | 2,641.96 | 5.879 |
turns out that the authors of python | 2,645.52 | 3.76 |
need to give us a little bit of help | 2,647.839 | 3.641 |
here because suppose that you pass in | 2,649.28 | 5.559 |
name and house to this init method and a | 2,651.48 | 5.48 |
method is just a function inside of a | 2,654.839 | 4.201 |
class what are you going to do with the | 2,656.96 | 4.159 |
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