Porque o programa será iniciado em `/code` e dentro dele está o diretório `./app` com seu código, o **Uvicorn** será capaz de ver e **importar** `app` de `app.main`.

!!! tip
    Revise o que cada linha faz clicando em cada bolha com o número no código. 👆

Agora você deve ter uma estrutura de diretório como:

```
.
├── app
│   ├── __init__.py
│   └── main.py
├── Dockerfile
└── requirements.txt

```Python hl_lines="7"
{!../../../docs_src/query_params_str_validations/tutorial006.py!}
```

!!! info "Informação"
    Se você nunca viu os `...` antes: é um valor único especial, faz <a href="https://docs.python.org/3/library/constants.html#Ellipsis" class="external-link" target="_blank">parte do Python e é chamado "Ellipsis"</a>.

Dessa forma o **FastAPI** saberá que o parâmetro é obrigatório.

#### Dicas e orientações

* Verifique sempre os <a href="https://github.com/tiangolo/fastapi/pulls" class="external-link" target="_blank">_pull requests_ existentes</a> para a sua linguagem e faça revisões das alterações e aprove elas.

!!! tip

AA,KA1CV,iGrHmiqBJ,iGqHn/pBU,aAAA,QrHw/pBV,yFACA,+FqHziqBI,wFrH2iqBJ,yFACA,+FAFA,wFqHniqBY,OAAA,IAAA,MAAA,QAPR,gFrHijqBJ,gFqHpiqBQ,iBAAA,QACA,MAAA,KAdJ,+FAAA,qGrHujqBJ,+FACA,qGqHriqBY,iBAAA,QACA,MAAA,KApBR,6ErH8jqBJ,6EqHjiqBY,aAAA,QA7BR,kGrHmkqBJ,kGqHliqBY,iBAAA,QACA,aAAA,QACA,MAAA,KAnCR,0GrH0kqBJ,0GqHniqBY,MAAA,qBAvCR,gHrH+kqBJ,gHqHriqBc,MAAA,KA1CV,gGrHolqBJ,gGqHpiqBU,aAAA,QrHyiqBV,yFACA,+FqH1lqBI,wFrH4lqBJ,yFACA,+FAFA,wFqHplqBY,OAAA,IAAA,MAAA,QAPR,gFrHkmqBJ,gFqHrlqBQ,iBAAA,QACA,MAAA,KAdJ,+FAAA...

hCJ,yCAmCM,WAAA,KACA,iBAAA,IAcF,uBACE,mBAAA,IAAA,eAAA,IADF,oDlCjCA,0BAAA,OAZA,wBAAA,EkC6CA,mDlC7CA,wBAAA,OAYA,0BAAA,EkCiCA,+CAeM,WAAA,EAfN,yDAmBM,iBAAA,IACA,kBAAA,EApBN,gEAuBQ,YAAA,KACA,kBAAA,I9BzDR,yB8BiCA,0BACE,mBAAA,IAAA,eAAA,IADF,uDlCjCA,0BAAA,OAZA,wBAAA,EkC6CA,sDlC7CA,wBAAA,OAYA,0BAAA,EkCiCA,kDAeM,WAAA,EAfN,4DAmBM,iBAAA,IACA,kBAAA,EApBN,mEAuBQ,YAAA,KACA,kBAAA,K9BzDR,yB8BiCA,0BACE,mBAAA,IAAA,eAAA,IADF,uDlCjCA,0BAAA,OAZA,wBAAA,EkC6CA,sDlC7CA,wBAAA,OAYA,0BAAA,EkCiCA,kDAeM,WAAA,EAfN,4DAmBM,iBAA...

AAM4F,EAAO7mB,GAAQ8mB,GAEhD,OAAOpkB,EAsBR,GAnBa,MAARue,GAAsB,MAANzf,GAGpBA,EAAKF,EACL2f,EAAO3f,OAAW6C,GACD,MAAN3C,IACc,iBAAbF,GAGXE,EAAKyf,EACLA,OAAO9c,IAIP3C,EAAKyf,EACLA,EAAO3f,EACPA,OAAW6C,KAGD,IAAP3C,EACJA,EAAKglB,QACC,IAAMhlB,EACZ,OAAOkB,EAeR,OAZa,IAARokB,IACJC,EAASvlB,GACTA,EAAK,SAAUwlB,GAId,OADA3lB,IAAS4lB,IAAKD,GACPD,EAAO/nB,MAAOX,KAAMsE,aAIzB8C,KAAOshB,EAAOthB,OAAUshB,EAAOthB,KAAOpE,EAAOoE,SAE1C/C,EAAKH,KAAM,WACjBlB,EAAO2lB,MAAMhN,IAAK3b,KAAMwoB,EAAOrlB,EAAIyf,EAAM3f,KA+a3C,SAAS4lB,GAAg...

?u&mo?ustam???wijihc?yahasi??i&akias?hies?k&asagan?i??masah??neznu?o&besas?darih?t&eso?og!imaknihs????ust&igot?onihcuk?uf????zayim!.&a&biihs?guyh?k&oebon?ustorom??mihsuk?r&emihsin?uatik??ta&katik?mim??wag&atik?odak??ya??e&banakat?sakog??i&hsayabok?kaza&kat?yim??m&animawak?ot&inuk?nihs????nanihcin?o&j&ik?onokayim??n&ibe?ust??tias??urahakat????ro&cep,moa!.&a&dawot?turust?wasim??e&hon&ihc&ah?ihs??nas?og?ukor??sario??i&anarih?ganayati?hsioruk?jehon?kasorih?makihsah?nawo?r&amodakan?omoa???o&gnihs?kka...

"bhúr", "caoga", "ceathair", "ceathrar", "chomh", "chtó", "chuig", "chun", "cois", "céad", "cúig", "cúigear", "d'", "daichead", "dar", "de", "deich", "deichniúr", "den", "dhá", "do", "don", "dtí", "dá", "dár", "dó", "faoi", "faoin", "faoina", "faoinár", "fara", "fiche", "gach", "gan", "go", "gur", "haon", "hocht", "i", "iad", "idir", "in", "ina", "ins", "inár", "is", "le", "leis", "lena", "lenár", "m'", "mar", "mo", "mé", "na", "nach", "naoi", "naonúr", "ná", "ní", "níor", "nó", "nócha", "ocht", "ochtar",...

hCJ,yCAmCM,WAAA,KACA,iBAAA,IAcF,uBACE,mBAAA,IAAA,eAAA,IADF,oDlCjCA,0BAAA,OAZA,wBAAA,EkC6CA,mDlC7CA,wBAAA,OAYA,0BAAA,EkCiCA,+CAeM,WAAA,EAfN,yDAmBM,iBAAA,IACA,kBAAA,EApBN,gEAuBQ,YAAA,KACA,kBAAA,I9BzDR,yB8BiCA,0BACE,mBAAA,IAAA,eAAA,IADF,uDlCjCA,0BAAA,OAZA,wBAAA,EkC6CA,sDlC7CA,wBAAA,OAYA,0BAAA,EkCiCA,kDAeM,WAAA,EAfN,4DAmBM,iBAAA,IACA,kBAAA,EApBN,mEAuBQ,YAAA,KACA,kBAAA,K9BzDR,yB8BiCA,0BACE,mBAAA,IAAA,eAAA,IADF,uDlCjCA,0BAAA,OAZA,wBAAA,EkC6CA,sDlC7CA,wBAAA,OAYA,0BAAA,EkCiCA,kDAeM,WAAA,EAfN,4DAmBM,iBAA...

"bhúr", "caoga", "ceathair", "ceathrar", "chomh", "chtó", "chuig", "chun", "cois", "céad", "cúig", "cúigear", "d'", "daichead", "dar", "de", "deich", "deichniúr", "den", "dhá", "do", "don", "dtí", "dá", "dár", "dó", "faoi", "faoin", "faoina", "faoinár", "fara", "fiche", "gach", "gan", "go", "gur", "haon", "hocht", "i", "iad", "idir", "in", "ina", "ins", "inár", "is", "le", "leis", "lena", "lenár", "m'", "mar", "mo", "mé", "na", "nach", "naoi", "naonúr", "ná", "ní", "níor", "nó", "nócha", "ocht", "ochtar",...