text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
using the get student function but | 4,477.4 | 3.839 |
rather than print student let's go ahead | 4,479.52 | 5.119 |
and declare expecto patronum printing | 4,481.239 | 6.521 |
out just that as pure text and now let's | 4,484.639 | 5 |
go ahead and print out not the student | 4,487.76 | 4.84 |
but rather the return value of their own | 4,489.639 | 5 |
charm method Method All right so let me | 4,492.6 | 3.92 |
go back down to my terminal window and | 4,494.639 | 5.361 |
run python of student. and enter name | 4,496.52 | 5.8 |
let's start with Harry he lives in | 4,500 | 5.28 |
Gryffindor uh petronis is a stag and | 4,502.32 | 6.44 |
let's see expecto patronum and of course | 4,505.28 | 5.959 |
we see the Stag Emoji what about someone | 4,508.76 | 4.439 |
like Draco who at least in the books | 4,511.239 | 4.4 |
doesn't have a known Patronis well let's | 4,513.199 | 4.201 |
go ahead and clear my terminal window | 4,515.639 | 4.281 |
rerun python of student. py and this | 4,517.4 | 5.319 |
time let's type in Draco for name | 4,519.92 | 5.6 |
slyther in for house and Patronis is | 4,522.719 | 4 |
unknown so I'm just going to go ahead | 4,525.52 | 4.08 |
and hit enter and now expecto patronum | 4,526.719 | 6.401 |
and just kind of sizzles instead well | 4,529.6 | 7.2 |
let me propose now that we remove this | 4,533.12 | 6.48 |
petronis code just to simplify our world | 4,536.8 | 4.96 |
and focus on some of the other core | 4,539.6 | 4.2 |
capabilities of classes so at the risk | 4,541.76 | 3.6 |
of disappointing I'm going to get rid of | 4,543.8 | 4.2 |
all of these beautiful emoji and charms | 4,545.36 | 4.279 |
and I'm going to go ahead and stop | 4,548 | 3.96 |
asking the user now for their petronis | 4,549.639 | 4.441 |
and I'm going to stop passing it into in | 4,551.96 | 4.84 |
it here and I'm going to stop uh doing | 4,554.08 | 5.36 |
this here and I'm going to instead just | 4,556.8 | 5.8 |
go ahead and restore our use of print | 4,559.44 | 5.36 |
student here and I'm going to go ahead | 4,562.6 | 4.52 |
and get rid of petronis down here so | 4,564.8 | 4.52 |
essentially undo all of the fun charms | 4,567.12 | 4.36 |
we just created so we're now back at the | 4,569.32 | 5.879 |
point in the story where we have a | 4,571.48 | 6.64 |
student class with only two methods in | 4,575.199 | 5.44 |
it and stir the first of those takes of | 4,578.12 | 4.24 |
course self as the first argument as it | 4,580.639 | 4 |
always will plus two more now name and | 4,582.36 | 4.6 |
house no more Patronis we're validating | 4,584.639 | 4.761 |
name up here we're validating house down | 4,586.96 | 4.199 |
here and then we're assigning name and | 4,589.4 | 3.72 |
house respectively to two instance | 4,591.159 | 4.401 |
variables called name and house also but | 4,593.12 | 4.72 |
we used self to get access to the | 4,595.56 | 4.4 |
current object to store those values | 4,597.84 | 4.319 |
therein we then still have our stir | 4,599.96 | 4.64 |
method here which takes one argument by | 4,602.159 | 4.48 |
default self and that's it and that | 4,604.6 | 3.28 |
function is going to be called | 4,606.639 | 3.321 |
automatically anytime you want to | 4,607.88 | 4.68 |
convert a student object to a string | 4,609.96 | 5.199 |
just like print might want to do here so | 4,612.56 | 4.079 |
let me go ahead and just make sure I | 4,615.159 | 2.921 |
haven't broken anything let me run | 4,616.639 | 4.08 |
python of studenty I'll type in Harry | 4,618.08 | 5.36 |
I'll type in Gryffindor enter okay we're | 4,620.719 | 4.721 |
back in business gone are the charms and | 4,623.44 | 4.08 |
patronises but at least I'm back to a | 4,625.44 | 4.68 |
situation where I have names and houses | 4,627.52 | 5.76 |
but it turns out at the moment our use | 4,630.12 | 6.68 |
of classes is not very robust even | 4,633.28 | 6 |
though we have this mechanism very | 4,636.8 | 5.32 |
cleverly if I may in our init method of | 4,639.28 | 5.32 |
making sure that validating name and | 4,642.12 | 4.96 |
house making sure that name is not blank | 4,644.6 | 5.039 |
and making sure that house is a valid | 4,647.08 | 5.639 |
house among those four Hogwarts houses | 4,649.639 | 5.201 |
it turns out that classes will still let | 4,652.719 | 4.081 |
me get at those attributes those | 4,654.84 | 4.359 |
so-called instance variables using dot | 4,656.8 | 5.16 |
notation anyway let me scroll down then | 4,659.199 | 4.401 |
and try to do this a little | 4,661.96 | 4.52 |
adversarially suppose that on line 16 I | 4,663.6 | 4.92 |
go ahead and call get student which | 4,666.48 | 4.679 |
exists as before and then I store the | 4,668.52 | 4.8 |
return value in a student variable again | 4,671.159 | 5.841 |
on line 16 that will ensure that get | 4,673.32 | 6.04 |
student gets called which calls input | 4,677 | 5.08 |
and input and then it calls the student | 4,679.36 | 4.76 |
Constructor which invokes automatically | 4,682.08 | 4.639 |
this init method so by way of how we've | 4,684.12 | 5 |
laid out my code we're going to ensure | 4,686.719 | 4.401 |
that name is not blank and house is | 4,689.12 | 3.84 |
definitely one of those four values my | 4,691.12 | 4.519 |
error correction or error checking is in | 4,692.96 | 6.16 |
place but if I'm a little adversarial I | 4,695.639 | 5.961 |
can still circumvent it suppose that | 4,699.12 | 4.079 |
fine I'm going to you're going to | 4,701.6 | 3 |
require me to type in Harry and | 4,703.199 | 3.121 |
Gryffindor I'm going to go ahead and | 4,704.6 | 3.88 |
type in student.h housee equals quote | 4,706.32 | 5.44 |
unquote number four private drive and | 4,708.48 | 4.92 |
you're not going to be able to stop me | 4,711.76 | 4.36 |
why well it turns out with classes and | 4,713.4 | 5.08 |
objects thereof you and I can still | 4,716.12 | 4.4 |
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