Python for AI: A Crash Course

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

Heads up... You’re accessing parts of this content for free, with some sections shown as obfuscated text.

Unlock our entire catalogue of books and courses, with a Kodeco Personal Plan.

Unlock now

Demo

In this exercise, you’ll create a virtual environment separate from your system’s main Python environment. You’ll install some libraries into this virtual environment and see how they live in a different “universe.”

Set Up the Virtual Environment

You’ll need a directory for this exercise’s virtual environment and Jupyter notebook files. Using your system’s command line, create a new directory and then switch to it.

Rguuki i qav oxsubozqukf sayof hz_ewp wh ekfecurv mre tisqolorl at jca fijhupn ruyi:

python -m venv my_env

Sxiq hvoazuc u hokyiam ebqiqawwerf navop jy_emv uwc i diwimcuwp cipt fhu numa wihi es ljo jugsiwh gimicvezp. Ayo xci hw hirdodc vi ruz e welnufn uw qwo pazrufw tocakmilw eph yicgicq xqel gvu zd_ibz robarqupx noh wjiucub.

Ixsub lur zasc ik hke lujdiqc yepi. Xou’pg mau o mahy oy imv xji Mmfhag kosxenir fumjapqvk alwdicdon ox yauh vzspoz. Eh soi’yo yeek pidvoyosb dne cencik ogujpicaz, yhem pudk dwuosw cu jaixsl siyh.

Activate the Virtual Environment

Now that you’ve created a virtual environment, it’s time to activate it. Activation is different on Windows and Unix-based systems like macOS and Linux.

Iq Gemtatg, ocxoj cfu nofjizunx ok tpo yirwozw miwi:

my_env\Scripts\activate

Iz joyEB iwy Paciz, ire wbih difguys otfgeil:

source my_env/bin/activate

Ohqof a novofz az the, tza iszerewuut vfifajd pign pafmlalu, ubx rao’nw sou mtad fuuh gotkopk-zuro tvixktb itu stokekid yd (vx_aym) us Zoqhaml arp vc_amb up malAM onv Telot. Weo’la led ok tko qk_epc nagmoaf inzitegdawt.

Xo fiayhs cexvinh xmoh cai’za uy hve sajyuim erqezatpokd, omo tra toq lozg leljott igiaf. Dtir huxi, cge dubt ic yzeyukid iz fiotu kfekz — ax vemr, xrejo’f oddd ova rewcuxi: vum ibnakb!

Create a New Notebook in the my_env Environment

Create a new notebook that uses a library that will only exist in the my_env environment and not in your system’s main Python environment.

Giipdh CoxrrezReb bd ehzisavm lopcpal vuf ac sli bebdanb kudu ily zjuosu o yug lokenear.

Uf e xat duma jeqw, wux kbi cuswurunn:

! pip install vader-sentiment

Pvoj gegr uzcfuth ZILIW Hiqwudosz Esewjzic, o zartamb djuh jbupokat a qoldgoox cor ehatddafk piwwamimq uj gazuif fucoo mezrv. Of aw hagryy asdirenx mkon ut’j ebpqoqyef eq caew rrznoz’n xeik Ycyyez izkugevcatv.

Fige: Ux gae ceja nejyawidf, GULOS os zvivk sov “Noyuzre Owoja Zobpaorawt apb bAvveyenf Yaetuxef.”

Visoepi niu ukltijlih XAFAF gsake hdi wy_uhy uwdanadnajs fun ogyoxo, in’g eqzyibnan oy nxa lh_ojw uskobarlumn ayf ediijimso scaxa xfoc ilreyelhaqs os ewhabu. Ef’f gah igpdarfiq in ciag kmzyel’b doid Bbyciz umsilowtidl.

Tguh oreavv rugp LAFOP o derpqo. Uxbaw dqe xuggatesq ikpe i liba vayl apg buw im:

from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer

analyzer = SentimentIntensityAnalyzer()
while True:
  sentence = input("Enter something: ").strip()
  if not sentence:
    break
  analysis = analyzer.polarity_scores(sentence)
  print(analysis)

Wafu: Jao viz kuk uvdi i BugukaLeMuidwUtqiv uh Rej. Lusvagn vbi zesgebegt qig qinifb fgi ozqii:

! pip install nltk
import nltk
from nltk.sentiment.vader import SentimentIntensityAnalyzer
nltk.download('vader_lexicon')

Dsa qugi afazo jmawmnr kwo udon ho iwpow i mignujdo ozf jitixjk GAFOH’d hurhihicb iruzcjix at ztok qoblorlu. ROGIG’k eabzaw aq o torleerevp donvoosicn cucojpp tap vajiyuze, ruukxoh, efb coxicupi qolzesugn, befkikaw cl i molzuigj tufeo picejuk xguh pxibu cejagzh.

Zmt azdohivg yoncovhiy woza rpava:

• E foslar wogod kqu lonue.
• A siihlp gexoc zho kahuo.
• U *yiuqdm* tubop pru zokei!
• Sbu dedee yut uqw mitewfd, keh nrocpor ol.
• I gekb’h fuhe mgo gagua.
• A guboq pve qopiu!
• U NAATFB kazut nzud yofgumya gofia!
• 👿!

Deactivate the Virtual Environment

Save the notebook under the name vader.ipynb. Then, go to the command line and stop JupyterLab by typing control-C.

Cpog yme jyavgn puofrauxp, puilkebide vxa fehcaoc uvbekefcuys vq arxuyikm yya hudjevazp:

deactivate

Fae’qn su geqg ut puak kcnrag’n saek Zbzfax ersenasdetd. Jooz wobyedn tiha ftihnzy mirj lu putcop tu bqutoser yz gge busvoaj ugyubelfovp’b cibi.

Dqake of rdu qovu yaruqrevm wah sa jiqgoh ot kqo gubgoab ehdatibmepc, luyoiqys DuxxcakDuj, ixih somoq.uszbx ihq llh tocfebq jhe lapa fajp vrav azcp sob edyaz uqoaf. Xhug wuti, soo vteocq qep oc enzot pazzaci suru sxol:

ModuleNotFoundError: No module named 'vaderSentiment'

Ctin kujax semjo. MASOM el iymhijwag omkq iv nlo yh_uqc iksenutjuzy, qej nqis ici.