Dans les versions précédentes de JavaScript côté navigateur / NodeJS, vous auriez utilisé des « callbacks ». Menant potentiellement à ce que l'on appelle le « callback hell ».

## Coroutines { #coroutines }

ore{content:"\f0de"}.fa-soundcloud:before{content:"\f1be"}.fa-sourcetree:before{content:"\f7d3"}.fa-spa:before{content:"\f5bb"}.fa-space-shuttle:before{content:"\f197"}.fa-speakap:before{content:"\f3f3"}.fa-speaker-deck:before{content:"\f83c"}.fa-spell-check:before{content:"\f891"}.fa-spider:before{content:"\f717"}.fa-spinner:before{content:"\f110"}.fa-splotch:before{content:"\f5bc"}.fa-spotify:before{content:"\f1bc"}.fa-spray-can:before{content:"\f5bd"}.fa-square:before{content:"\f0c8"}.fa-squa...

			testRead{1, "", io.ErrUnexpectedEOF},
			testRemaining{38, 38},
		},
	}, {
		maker: makeReg{"hello, world", 5},
		tests: []testFnc{
			testRemaining{5, 5},
			testRead{0, "", nil},
			testRead{4, "hell", nil},
			testRemaining{1, 1},
			testWriteTo{fileOps{"o"}, 1, nil},
			testRemaining{0, 0},
			testWriteTo{nil, 0, nil},
			testRead{0, "", io.EOF},
		},
	}, {

ore{content:"\f0de"}.fa-soundcloud:before{content:"\f1be"}.fa-sourcetree:before{content:"\f7d3"}.fa-spa:before{content:"\f5bb"}.fa-space-shuttle:before{content:"\f197"}.fa-speakap:before{content:"\f3f3"}.fa-speaker-deck:before{content:"\f83c"}.fa-spell-check:before{content:"\f891"}.fa-spider:before{content:"\f717"}.fa-spinner:before{content:"\f110"}.fa-splotch:before{content:"\f5bc"}.fa-spotify:before{content:"\f1bc"}.fa-spray-can:before{content:"\f5bd"}.fa-square:before{content:"\f0c8"}.fa-squa...

이전 버전의 파이썬에서는 스레드 또는 [Gevent](https://www.gevent.org/)를 사용할 수 있었을 것입니다. 하지만 코드를 이해하고, 디버깅하고, 이에 대해 생각하는 것이 훨씬 더 복잡합니다.

이전 버전의 NodeJS/브라우저 JavaScript에서는 "callback"을 사용했을 것입니다. 이는 "callback hell"로 이어집니다.

## 코루틴 { #coroutines }

**코루틴**은 `async def` 함수가 반환하는 것에 대한 매우 고급스러운 용어일 뿐입니다. 파이썬은 그것이 함수와 비슷한 무언가로서 시작할 수 있고, 어느 시점에 끝나지만, 내부에 `await`가 있을 때마다 내부적으로도 일시정지 ⏸ 될 수 있다는 것을 알고 있습니다.

				iamLogIf(ctx, nerr.Err)
			}
		}
	}

	return nil
}

// CreateUser - create new user credentials and policy, if user already exists
// they shall be rewritten with new inputs.
func (sys *IAMSys) CreateUser(ctx context.Context, accessKey string, ureq madmin.AddOrUpdateUserReq) (updatedAt time.Time, err error) {
	if !sys.Initialized() {

		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInvalidArgument), r.URL)
		return
	}
	// We do not care if service account is readable or not at this point,
	// since this is a delete call we shall allow it to be deleted if possible.
	svcAccount, _, err := globalIAMSys.GetServiceAccount(ctx, serviceAccount)
	if errors.Is(err, errNoSuchServiceAccount) {

140-3 IG 10.3.A // Additional Comment 1: "For key pairs generated for use with approved KEMs in // FIPS 203, the PCT shall consist of applying the encapsulation key ek to // encapsulate a shared secret K leading to ciphertext c, and then applying // decapsulation key dk to retrieve the same shared secret K. The PCT passes if // the two shared secret K values are equal. The PCT shall be performed either // when keys are generated/imported, prior to the first exportation, or prior to // the first operational...

140-3 IG 10.3.A // Additional Comment 1: "For key pairs generated for use with approved KEMs in // FIPS 203, the PCT shall consist of applying the encapsulation key ek to // encapsulate a shared secret K leading to ciphertext c, and then applying // decapsulation key dk to retrieve the same shared secret K. The PCT passes if // the two shared secret K values are equal. The PCT shall be performed either // when keys are generated/imported, prior to the first exportation, or prior to // the first operational...

$toast-border-width));\n}\n\n.toast-body {\n  padding: $toast-padding-x; // apply to both vertical and horizontal\n}\n","// .modal-open      - body class for killing the scroll\n// .modal           - container to scroll within\n// .modal-dialog    - positioning shell for the actual modal\n// .modal-content   - actual modal w/ bg and corners and stuff\n\n\n.modal-open {\n  // Kill the scroll on the body\n  overflow: hidden;\n\n  .modal {\n    overflow-x: hidden;\n    overflow-y: auto;\n  }\n}\n\n// Container that...