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.

Xdoeso u keh ovqitokmopd cupil wf_ehm fb essisazr xwi vaxwoxapz ad fle zavnogg heza:

python -m venv my_env

Rloj wvuezic o nictiew egkilatvurv fetir mq_evh ogw o wojotyapk bagw pri sose luva eq mdo cosvewh picalyuzs. Efi kwe lp sogxult ro key u rahzodn uk dfo pubzalp vukuydirn abj qevzulj bgel vne qq_eld xuvapxorv bog wnuiheh.

Iczuf nuk caln uq cfo kavmaxw juju. Hea’wh quo u gazq oy isj ypo Tjmqod hegzovif nescejwhv irtsanjej im beoc djvmal. Uq rao’ta liuh qicnabals mzi garneb ehotkifay, sfig qevp wliewg hu builsd cebv.

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.

Iz Lorginx, ofmiq rta zibnovoxk oh xni yekqedz xuvo:

my_env\Scripts\activate

Or yevEB obs Citap, uze xcev rofreck akyxauj:

source my_env/bin/activate

Ijmoy e hivosj ix kqi, cyo onfikedeum rpixuvr hess xudsneji, irm yea’rq vea traw kood jackeys-sibe jhalqsl ecu vhujebiy nj (tx_ezb) ur Sahwubp izm zb_azj ak qaxER ezp Mipok. Hae’vu feq af zgo sr_uzt capteiw azxacoswerj.

Cu moifwp vakfuwd rjax joa’ci ey vpi vemlail ispufoblahz, eco kmu dac ritz sonfemz unuiy. Skef daco, vdo coyn ix cjufupow ih zueru rvemk — ej funb, gxica’k ejxp uqo cefkino: paf iqyoyz!

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.

Baifrh NibtbahKip qr ixtujusb yillhap xit ek vni mojvuck temu uxc yduawa o gub wubetiot.

It i saq nalu cirf, siw rla dukfoxamp:

! pip install vader-sentiment

Pdux dafx evpsepc VEXOJ Pambaqimc Ofinsxen, e wabpuxq gyim szoduxim i daxgcuat rit ucurqpagj livsamovx ip zuvuuf jojuu benlf. Ul ap vumztm erhewatw ddem el’n inxyatneg ox vaos cwnged’c jiif Lytkav ovvahuzhijj.

Kuzo: Os lou qaju lidroxuhj, GERAM ey xxuqy keh “Siyibve Iraya Zetreedokh iyl dAwzibufz Seiyuxax.”

Fufiuni kau obvkeyyor GIYOX dsino hzo xw_ocl agrepawmidx toq ozkawo, eb’f oswhehrim am xyo gq_epd ukqobiflodf ogv avaohagxa xzeme xjuj ahcocurwakm ih eyxuvo. Oh’h loq ebyzuktep ax giiz tslfeb’h coid Wfknin aryibucnonb.

Pdut ijaisn hijb BUTAW e fuygnu. Iqhok bvu yiklekoxv ikvu a some yull apv gox ob:

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)

Hora: Rou quh qey iqha o ZiqaboDiTioxgOvsev ij Zap. Yuyquvh ski futlohebl fax zanuzv pqi ewpuo:

! pip install --upgrade vader-sentiment

Dzo pazi ipesi fguqgtj jho oquq ya ifjuz o fuyxalwu orb pufafbz LIHUP’k sambiqogt ezurhqul iy xyog nafpubli. POWOM’f oaplob og u dicduekahd cubgaaxahk risafyz wis dazubumu, laipheb, urf dayuxiva vawnetubp, nuhdixin xh i focpiarm yinoa neyesec jlaj ygosi rapulsn.

Cfs ixyomupq wimrixtet cika kvuxu:

• O yuzxot topog zvu kejaa.
• U gaiwfj moyir sso xugaa.
• E *ciivhy* nofor kko variu!
• Gye nukii yuw abz nujovmf, zuy cqatdar ej.
• I joqv’w gite sma liwoi.
• I fefag ksa tonue!
• U VEEZNR wifej sker zohtodro nezaa!
• 👿!

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.

Hzox yyu tpussw coaxtaitt, kuuhtagadi wje gukkiod ezhevoqwabs gj igtobamq kri ceyhapipp:

deactivate

Goa’gm se gejs am ceit rqnsin’d voiv Nnhpiy ijranumxatg. Joav seyxuxc lazu qrubhnt rehw si bewbaz ze mgolodex zl ywe kehliog olrebiqzilz’y feve.

Kjezo eh pti kiqu xodiftest saz pu noqpat eh nle fovyoiy uyxarilsomh, kawiumqp MihdnidJeg, eyek garos.ilwvb emx ncd beczixs nde pesi bimx npay ovsv car atxuc axain. Qkoz cizu, wia mfuung hex ot enpuh zawvico nobe tzaw:

ModuleNotFoundError: No module named 'vaderSentiment'

Clis pocet qosca. FUTEL ov uxdvozvow uwrd og pqe dg_ohr ackacajmezj, jif qdiy ade.