text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
of in one breath if you will | 3,358.619 | 3.72 |
all right let me pause here to see if | 3,361.02 | 3.36 |
there's any questions specifically about | 3,362.339 | 5.46 |
Lambda or Anonymous functions and this | 3,364.38 | 5.52 |
tightening up of the code | 3,367.799 | 4.5 |
and I have one question like whether we | 3,369.9 | 4.919 |
could Define Lambda twice | 3,372.299 | 5.221 |
can you you can use Lambda twice you can | 3,374.819 | 4.5 |
create as many Anonymous functions as | 3,377.52 | 4.44 |
you'd like and you generally use them in | 3,379.319 | 4.26 |
context like this where you want to pass | 3,381.96 | 4.379 |
to some other function a function that | 3,383.579 | 5.101 |
itself does not need a name so you can | 3,386.339 | 4.141 |
absolutely use it in more than one place | 3,388.68 | 4.139 |
I just have only one use case for it how | 3,390.48 | 4.2 |
about one other question on Lambda or | 3,392.819 | 3.961 |
Anonymous functions specifically what | 3,394.68 | 6.24 |
what if our Lambda would take more than | 3,396.78 | 8.4 |
one line for example if sure if your | 3,400.92 | 5.58 |
Lambda function takes multiple | 3,405.18 | 3.54 |
parameters that is fine you can simply | 3,406.5 | 5.28 |
specify commas followed by the names of | 3,408.72 | 5.28 |
those parameters maybe X and Y or so | 3,411.78 | 4.92 |
forth after the name student so here too | 3,414 | 4.38 |
Lambda looks a little different from | 3,416.7 | 3.96 |
Death in that you don't have parentheses | 3,418.38 | 3.66 |
you don't have the keyword def you don't | 3,420.66 | 3.3 |
have a function name but ultimately they | 3,422.04 | 3.6 |
achieve that same effect they create a | 3,423.96 | 4.26 |
function anonymously and allow you to | 3,425.64 | 4.439 |
pass it in for instance as some value | 3,428.22 | 5.52 |
here so let's now change students.csv to | 3,430.079 | 5.941 |
contain not students houses at Hogwarts | 3,433.74 | 4.26 |
but their homes where they grew up so | 3,436.02 | 4.2 |
Draco for instance grew up in Malfoy | 3,438 | 6.54 |
Manor Ron grew up in the borough Harry | 3,440.22 | 7.5 |
grew up in uh number four | 3,444.54 | 6.299 |
privet drive and according to the | 3,447.72 | 4.98 |
internet no one knows where Hermione | 3,450.839 | 3.601 |
grew up the movies apparently took | 3,452.7 | 3.24 |
certain liberties with where she grew up | 3,454.44 | 2.94 |
so for this purpose we're actually going | 3,455.94 | 3.359 |
to remove Hermione because it is unknown | 3,457.38 | 4.08 |
exactly where she was born so we still | 3,459.299 | 4.681 |
have some three students but if anyone | 3,461.46 | 6.18 |
can spot the potential problem now | 3,463.98 | 6.24 |
how might this be a bad thing well let's | 3,467.64 | 4.32 |
go and try and run our own code here let | 3,470.22 | 4.2 |
me go back to students.pi here and let | 3,471.96 | 3.839 |
me propose that I just changed my | 3,474.42 | 3.12 |
semantics because I'm now not thinking | 3,475.799 | 3.901 |
about Hogwarts houses but the students | 3,477.54 | 3.42 |
own home so I'm just going to change | 3,479.7 | 3.48 |
some variables I'm going to change this | 3,480.96 | 5.28 |
house to a home this house to a home as | 3,483.18 | 5.159 |
well as this one here I'm still going to | 3,486.24 | 3.96 |
sort the students by name but I'm going | 3,488.339 | 4.26 |
to say that they're not in a house but | 3,490.2 | 4.98 |
rather from a home so I've just changed | 3,492.599 | 4.441 |
the names of my variables in my grammar | 3,495.18 | 4.02 |
in English here ultimately to print out | 3,497.04 | 4.44 |
that for instance Harry is from number | 3,499.2 | 5.099 |
four privet drive and so forth but let's | 3,501.48 | 4.92 |
see what happens here when I run python | 3,504.299 | 4.141 |
of this version of students.pi having | 3,506.4 | 5.459 |
changed students.csv to contain those | 3,508.44 | 6.3 |
homes and not houses enter | 3,511.859 | 6.421 |
huh our first value error like the | 3,514.74 | 6.9 |
program just doesn't work What might | 3,518.28 | 5.76 |
explain this value error the explanation | 3,521.64 | 5.34 |
of which rather cryptically is too many | 3,524.04 | 5.16 |
values to unpack and the line in | 3,526.98 | 6.18 |
question is this one involving split how | 3,529.2 | 6.3 |
did all of a sudden after all of these | 3,533.16 | 4.74 |
successful runs of this program did line | 3,535.5 | 6.079 |
five suddenly now break in the line | 3,537.9 | 6.3 |
instruments.csv you have three values | 3,541.579 | 3.941 |
there's a line that you have three | 3,544.2 | 5.099 |
values and incident yeah I spent a lot | 3,545.52 | 5.819 |
of time trying to figure out where every | 3,549.299 | 3.78 |
student should be from so that we could | 3,551.339 | 3.48 |
create this problem for us and | 3,553.079 | 3.421 |
wonderfully like the first sentence of | 3,554.819 | 4.74 |
the book is number four privet drive and | 3,556.5 | 4.859 |
so the fact that that address has a | 3,559.559 | 4.321 |
comma in it is problematic why because | 3,561.359 | 4.681 |
you and I decided some time ago to just | 3,563.88 | 4.439 |
standardize on commas CSV comma | 3,566.04 | 7.44 |
separated values to denote the uh | 3,568.319 | 7.141 |
we standardized on commas in order to | 3,573.48 | 4.74 |
delineate one value from another and if | 3,575.46 | 5.52 |
we have commas grammatically in the | 3,578.22 | 5.04 |
student's home we're clearly confusing | 3,580.98 | 4.5 |
it as this special symbol and the split | 3,583.26 | 4.92 |
function is now for just Harry trying to | 3,585.48 | 5.28 |
split it into three values not just two | 3,588.18 | 4.56 |
and that's why there's too many values | 3,590.76 | 4.38 |
to unpack because we're only trying to | 3,592.74 | 5.64 |
assign two variables name and house now | 3,595.14 | 5.1 |
what could we do here well we could just | 3,598.38 | 3.78 |
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