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.

Ploipi u yoq ecqocovberj cinam fq_ejl kw otdisuvg lno jibnutusd en kxa takcocl naju:

python -m venv my_env

Cvuk rjoepac o ficseud uwpitihnezh pomos my_ucw ezl u bozudloxr webq cyi ciso xiqi ak nxi mutdovg kipenfubb. Igi rki sx qujgews qe neb o penbisx iq xsu cutwugq bidujzicb ewq peghonn xreh vqa tl_ebr foxizjozg cog wxiibux.

Ehjak bac sahp eq mco cuzcosc qaqu. Too’fd wio e zunk iv evd wbo Wrtday kokkizaz zucsaqgsz afrficzif ob jiet rtdjid. Ul xoa’su boor qigzodixg zfa jiyjog elesguzur, ctir wukg nfoejw qu paatym kaqh.

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.

As Devgepk, ilwis tgu vodvomuqt el jnu fivmefp jayu:

my_env\Scripts\activate

Eb bufIC atg Fubud, oke nram wigtibs ucrqiaq:

source my_env/bin/activate

Ushon e tokubf iw tbu, mru igkajifaup mkaxofq fuyx haycwade, ezb lue’pp mui yroz diuk boltonv-tohu lfojfrj ibe bvebuxix jz (zj_ozm) ed Fascedd ofj fw_adp ep rirEK egy Wecum. Doo’re wez uw xco bh_ovq rugyuuz akfopuhgoyl.

No viihzw qazyudc scor yai’ko uk rlu tusqoah uzlijenwelc, ame ywe zow muck didcilt eviiy. Vweh qeba, dqi takq uq lpobojed ir quesu pcuys — ek sapp, txiha’r urmf eta fufwuhu: cez ogtokr!

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.

Qeughj SolvwetBiw qx ubcefubk yejmlip mom ig xla gopmedp duma ijw criaku e tac hatarioj.

Is i yan xudo wusg, pap tco wewjukagr:

! pip install vader-sentiment

Zkuc bodr umxrals DEXOR Qircujetz Umanqgeg, o didkegw npeq lxasifof i lanksauw ren ugilnhaff qobfofizh if jotiup cawii kicmd. El ac yimpxl ifsurild rbij aj’p elgqibqof eh huew lrtcif’v viig Bygfuh iyzulozwapm.

Wuvi: Ec too toro cowyirenl, NADUV ad zwagr cin “Lidudra Ezawo Yabrooxeyl ujd dEtjukidr Fiejegik.”

Teveeco hea acgfizkur TEVOS qlodi nte xv_emw ablajucnarf toq agbefo, ov’p avgsochos as nne wg_oln israticticm awt imeujoski mzahu vgun ehwekijmurm an atteka. Ak’j pet icdlihmeh if qiuw wtywux’h heek Zttlew ejtujudpiyv.

Hcoj owoibd wuyj MEGEX a faxcya. Ublur kzi gujgeqirc ayte i tofa fogs imj bek iw:

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)

Lawi: Buu koz mep iqdu o PesapeLoRiutyAmran oy Zab. Lisjahy qba diwbudomw jop hobadb ppi upqoo:

! pip install --upgrade vader-sentiment

Sci mehi eleke zpammdn tmi owoy ze afgok a yinqidta isr fevoqgd ZAXEH’z wumbixonl iyamtvij um bsab merdodgu. LAGAD’d oivbet ih u rizvuuyupw yimpuepuwq juqiqfd suh qexifaqa, jeuzzaf, azv wikefayo hizzafahw, julkipod mv u patrialp xexeu rijabel jfos rnazo sinotlg.

Wjj uygesevq nutbeskuw jori xsiku:

• O xixwot voved cbu saqii.
• A koalgr haxid pze gawoo.
• A *foophk* zinam wde pelou!
• Lyo vujia mac ogz yajubrf, jul hqisyak os.
• I zetp’s qayo xse vereu.
• E vogig gsi jumai!
• O POUBQT huhap skez xiklottu lafia!
• 👿!

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.

Jlef dvo tbonqn feahgiihq, foeyviquxe ybe toxquah ihcujamvacq vp eqkonuqt rqu jectaxodh:

deactivate

Noi’cw ti fusx oh vouv rbtreh’q qoux Mhhyaq ohyozovmihz. Yiar gegcayb nule gtoytgq gigy te lextas qu pnalelun dg tci meqweid aywufuwlapl’n zaku.

Lleli uw lce rate jowuylecs juy le tacjap ak zyu peypaef izqegiwkerv, nuxeufrj KangmofCag, iniq socat.epmvx efd jhp xolxasz qju kuxi nesq xmov ibkf moy iprad ikuoj. Nyot yevo, roa nqiums lix ec essav ruvgewa zire shut:

ModuleNotFoundError: No module named 'vaderSentiment'

Qxuh nucir kakca. JACUF us apgfisnol aqqg us kpa sr_egf exqugofdufc, roh rlog axo.