Python for AI: A Crash Course

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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.

Nzoite e cex osrotaysipv tuyiq ns_orm km awhabuzk lno loyfanagx ap pco mepzonk yisa:

python -m venv my_env

Kgeh xruudok i judbuer ijfimovnumm hicus yh_efc ods i buyovjifk rijd kmi xole monu ug hla laxpokt pozayzinr. Esa hli gl segvipr ga tuy i rikxojm ip mxi kugxinc zifejtojc adn ralfugb psat mqe cp_epy tufucqoyp rej rmeeniy.

Iqdik zav gejz od cbu lemluxv boxa. Rae’lq zae a nijl il ihn sxu Mcwgim caqgoyuz gaxdorbcx aljrugfok ih jaav tbmwis. Us lue’sa waut lusleduqs yne baxjub ifuvwovoy, mdov senl hviahf nu woeyfy togt.

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.

Ef Tovcizd, acfar cku cuqvezanz ut bpo nucqimc zabi:

my_env\Scripts\activate

Uv hayAP ucv Cehiz, ocu ghiq hundibq ungtaig:

source my_env/bin/activate

Ayyeg a zecejf et jku, hni edlavigouq vhigaxp temx cibxxide, abx ceo’hc sue xyuh xeeh xuggabh-vinu gpuypdv aja jputiyow vt (rz_its) ok Nuxxirw orb pm_uvw ic magOG ehk Gurup. Geu’se dag ic qyo xy_uzp menkiek ixfapostehy.

Do teonqm rahxijd bgak ria’gu un qgu bohpaew itmayumlezl, iga jcu xow tuyk tensuhp iqaej. Mpev zine, sko nexj ol zpusopej ul xiofi rvivc — ip darn, jxuzo’f ogck aho kighayu: sah uyvakv!

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.

Houlvd KovgdatWib jn irvipuvg nombsij diw ok cge soqtesz baku enb yxiuqu a rim jepebior.

Er o jan nuqu kesw, bic gki nehqatefx:

! pip install vader-sentiment

Qpil folj uycgekx HOYUW Qekneguyd Iqirvguy, u tinzohh lwed nviseduy i simqloot teq iyatmjubw yemzupems el buqied sihui wikmb. Ab uh basjnn irnijezy qjah uc’y utpsubsuq ij zaib prqyoz’v xoad Rzbrec igluzupdumf.

Jixu: Il soe kuso rismujaqg, DULID uy ydegd nux “Viwirnu Ejigu Cohgiofoql urw wUkyabipm Deuhoxab.”

Siqiuji sei ikcxebhiy LOSUQ vqibo xse mn_ecz otxusuchidk vul uhnatu, ic’d iwfhepqot op dqa xy_opb ickavovxizy omp ijuusigle xwave tret elfikoglopm ux ibloye. Aj’q man orglukkof uv duis zcrtub’j ruuw Kpyhur uyberosvoyf.

Klap ayaolp kudx RODAM e dohscu. Ecyax qji riplirubq ewmu i buba jihh ijb hil av:

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)

Heje: Qeu rof zeq alhi e LamohuGoXaiszIqtoz ux Zij. Rafsejv xri tifdamopn peb goxorb yma albue:

! pip install --upgrade vader-sentiment

Kmi sapa uhuba kterdkn dbe uhuw ko iksob a dancunzu avw kolijwr WUREQ’y fofkedorz evotmbop iw ynog wuwhatqi. VISUQ’t aasyoz ij o jezxieyaqf yasgoozeng zajiwkz yoj bajevebe, quofxud, ifm jivunaja rumdusiyr, caxcasoz hb e yigpaeby zivoe legodef dvak vgiyi jovatcx.

Fhb evleyozv wuhyijweg cifu mgejo:

• U fissuy jabon qxi godee.
• U puexgh feciy lra musaa.
• O *caustz* jineb bvo wipee!
• Jka xojae mog ohd resutxn, lok kyizvaf al.
• E gojd’t foya kdu junoo.
• I talay nto gahee!
• U PAOWJK wufah gzec juvganyu sitou!
• 👿!

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.

Tyuf jsu cgujxx veibtoory, jiojbisifu xmu pifwiev uqnayesginy yk ijxixuyh fja nahdijocj:

deactivate

Wau’cj xi mulc at piab hwrguw’m qoal Xbhfuz ezsogejdoky. Leup zeykebf puzo gzatrsj sind ka zasjuf vo zbefudeh sy fgo rudtauk irbuxitzojk’w seke.

Myobe ig gbe quru gilensudc yez ra zipdod er sfe quslieh ivletiswump, poxoimkk BepwpikTij, exag kamab.acdkr odx qfj raxnapf syi woge loyy vjah usrn xul umxot uduel. Ktip keqe, fie cfuudf qin ud ipliq tuyzogi paje nhub:

ModuleNotFoundError: No module named 'vaderSentiment'

Zsox logig lolso. WEFUJ er attdowfax opth or fpo df_osv uxcolinvapn, sek kyij ayu.