text stringlengths 1 81 | start float64 0 10.1k | duration float64 0 24.9 |
|---|---|---|
question mark it also won't work so a | 5,867.679 | 4.48 |
lot of scenario actually oh my God I | 5,870.4 | 3.839 |
mean here we are I pretending to think I | 5,872.159 | 3.721 |
was done but my God like Alex gave us a | 5,874.239 | 3.721 |
whole laundry list of like problems and | 5,875.88 | 3.799 |
just to recap then what if it's not | 5,877.96 | 4.92 |
https it's HTTP slightly less secure but | 5,879.679 | 5 |
I should still be able to tolerate that | 5,882.88 | 3.68 |
programmatically uh what if the protocol | 5,884.679 | 3.241 |
is not there what if the user just type | 5,886.56 | 3.52 |
twitter.com davidj mailin it would be | 5,887.92 | 4.12 |
nice to tolerate that rather than show | 5,890.08 | 3.519 |
an error and make me type in the | 5,892.04 | 3.36 |
protocol why it's not good user | 5,893.599 | 4.321 |
experience what if it had a slash at the | 5,895.4 | 4.64 |
end of the username or a question mark | 5,897.92 | 3.84 |
If you think about URLs you've seen on | 5,900.04 | 3.8 |
the web there's very commonly more | 5,901.76 | 3.479 |
information especially if it's been | 5,903.84 | 3 |
shared on social media there might be | 5,905.239 | 4 |
HTTP parameters so to speak just stuff | 5,906.84 | 3.759 |
there that we don't want there could be | 5,909.239 | 2.601 |
a | 5,910.599 | 3.281 |
www.twitter.com which I'm also not | 5,911.84 | 3.96 |
expecting but does work if you go to | 5,913.88 | 4.48 |
that URL too so there's just so many | 5,915.8 | 4.319 |
things that can go wrong and even if I | 5,918.36 | 3.96 |
come back to my contrived example as | 5,920.119 | 4.161 |
earlier what if I run this program and | 5,922.32 | 5.76 |
say this uh my username is | 5,924.28 | 5.359 |
https | 5,928.08 | 6.039 |
twitter.com davidj mailen enter well | 5,929.639 | 7.48 |
that too just just didn't really work it | 5,934.119 | 5.12 |
got rid of the U | 5,937.119 | 4 |
actually okay actually that kind of | 5,939.239 | 4.761 |
worked but the goal here is to actually | 5,941.119 | 4.961 |
get the user's username not an English | 5,944 | 4.159 |
sentence describing the user's username | 5,946.08 | 4.119 |
so I would argue that even though I just | 5,948.159 | 3.721 |
accidentally created perfectly correct | 5,950.199 | 4.201 |
English grammar I did not extract the | 5,951.88 | 4.52 |
Twitter username correctly I don't want | 5,954.4 | 4.839 |
words like my username is as part of my | 5,956.4 | 5.08 |
input so how can we go about improving | 5,959.239 | 3.92 |
this and maybe chipping away at some of | 5,961.48 | 3.239 |
those problems one by one well let me | 5,963.159 | 3.681 |
clear my screen here let me come back up | 5,964.719 | 4.641 |
to my code and let me not just replace | 5,966.84 | 4.799 |
it but let me do something else instead | 5,969.36 | 3.839 |
I'm going to go ahead and instead of | 5,971.639 | 3.241 |
using replace I'm going to use another | 5,973.199 | 4.601 |
function called remove prefix a prefix | 5,974.88 | 5.44 |
is a string or a subring that comes at | 5,977.8 | 5.2 |
the start of another so if I remove | 5,980.32 | 4.279 |
prefix I don't need a second argument | 5,983 | 3.76 |
for this function I just need one what | 5,984.599 | 4.281 |
prefix do you want to remove so this | 5,986.76 | 4.879 |
will at least now fix the problem I just | 5,988.88 | 4.759 |
described of typing in like a whole sent | 5,991.639 | 3.96 |
where the URL is there but it's not the | 5,993.639 | 4.841 |
beginning it's only at the end so here | 5,995.599 | 4.801 |
this still is not correct but we don't | 5,998.48 | 3.759 |
create this weird looking output that | 6,000.4 | 4.839 |
just removes the URL part of the input | 6,002.239 | 5.761 |
uh my username is | 6,005.239 | 6.601 |
htps twitter.com davidj maen a moment | 6,008 | 7.4 |
ago it did remove the URL and left only | 6,011.84 | 6.08 |
the David J ma this is not perfect still | 6,015.4 | 4.96 |
but at least now it does not weirdly | 6,017.92 | 4.52 |
remove the URL and then leave the | 6,020.36 | 4.4 |
English it's just leaving it alone so | 6,022.44 | 3.84 |
maybe I could handle this better but at | 6,024.76 | 3.399 |
least it's removing it from the part of | 6,026.28 | 3.56 |
the string I might | 6,028.159 | 3.921 |
anticipate well what else could we do | 6,029.84 | 4.12 |
here well it turns out that like regular | 6,032.08 | 4.639 |
Expressions just let us express patterns | 6,033.96 | 4.8 |
much more precisely we could spend all | 6,036.719 | 3.52 |
day using a whole bunch of different | 6,038.76 | 3.52 |
python functions like remove prefix or | 6,040.239 | 4.561 |
remove and strip and others and kind of | 6,042.28 | 5.359 |
make our way to the right solution but a | 6,044.8 | 4.48 |
regular expression just allows you to | 6,047.639 | 3.681 |
more succinctly if admittedly more | 6,049.28 | 4.6 |
cryptically Express these kinds of | 6,051.32 | 4.56 |
patterns and goals and we've seen from | 6,053.88 | 4 |
parentheses which can be used not just | 6,055.88 | 4.92 |
to group symbols together as sets but to | 6,057.88 | 5.359 |
capture information as well we have a | 6,060.8 | 5.919 |
very powerful tool now in our toolkit so | 6,063.239 | 6.161 |
let me do this let me go ahead and start | 6,066.719 | 6 |
fresh here and import the re Library as | 6,069.4 | 5.08 |
before at the very top of my program I'm | 6,072.719 | 3.92 |
still going to get the user's URL via | 6,074.48 | 4.04 |
the same line of code but I'm now going | 6,076.639 | 4.761 |
to use another function as well it turns | 6,078.52 | 5.28 |
out that there's not just re do search | 6,081.4 | 4.88 |
or rd. match or re. full match there's | 6,083.8 | 5.879 |
also re. sub in the regular expression | 6,086.28 | 5.839 |
Library where sub here means substitute | 6,089.679 | 4.241 |
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