* See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.ws

import assertk.assertThat
import assertk.assertions.isBetween
import assertk.assertions.isCloseTo
import assertk.assertions.isEmpty
import assertk.assertions.isEqualTo
import assertk.assertions.isFalse
import assertk.assertions.isInstanceOf
import assertk.assertions.isLessThan

```Python
async with lifespan(app):
    await do_stuff()
```

Wenn Sie wie oben einen Kontextmanager oder einen asynchronen Kontextmanager erstellen, führt dieser vor dem Betreten des `with`-Blocks den Code vor dem `yield` aus, und nach dem Verlassen des `with`-Blocks wird er den Code nach dem `yield` ausführen.

Es gibt andere Formate und Tools zum Definieren und Installieren von Paketabhängigkeiten.

///

### Den **FastAPI**-Code erstellen { #create-the-fastapi-code }

* Erstellen Sie ein `app`-Verzeichnis und betreten Sie es.
* Erstellen Sie eine leere Datei `__init__.py`.
* Erstellen Sie eine `main.py`-Datei mit:

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():

ce.fn.extend({css:function(e,t){return M(this,function(e,t,n){var r,i,o={},a=0;if(Array.isArray(t)){for(r=Xe(e),i=t.length;a<i;a++)o[t[a]]=ce.css(e,t[a],!1,r);return o}return void 0!==n?ce.style(e,t,n):ce.css(e,t)},e,t,1<arguments.length)}}),((ce.Tween=at).prototype={constructor:at,init:function(e,t,n,r,i,o){this.elem=e,this.prop=n,this.easing=i||ce.easing._default,this.options=t,this.start=this.now=this.cur(),this.end=r,this.unit=o||(ce.cssNumber[n]?"":"px")},cur:function(){var e=at.propHooks[this.prop];return...

ce.fn.extend({css:function(e,t){return M(this,function(e,t,n){var r,i,o={},a=0;if(Array.isArray(t)){for(r=Xe(e),i=t.length;a<i;a++)o[t[a]]=ce.css(e,t[a],!1,r);return o}return void 0!==n?ce.style(e,t,n):ce.css(e,t)},e,t,1<arguments.length)}}),((ce.Tween=at).prototype={constructor:at,init:function(e,t,n,r,i,o){this.elem=e,this.prop=n,this.easing=i||ce.easing._default,this.options=t,this.start=this.now=this.cur(),this.end=r,this.unit=o||(ce.cssNumber[n]?"":"px")},cur:function(){var e=at.propHooks[this.prop];return...

e","startLength","hooks","_queueHooks","unshift","stop","setter","clearQueue","tmp","count","defer","pnum","source","rcssNum","cssExpand","isAttached","composed","getRootNode","isHiddenWithinTree","style","display","css","adjustCSS","valueParts","tween","adjusted","scale","maxIterations","currentValue","initial","unit","cssNumber","initialInUnit","defaultDisplayMap","showHide","show","values","body","hide","toggle","div","rcheckableType","rtagName","rscriptType","createDocumentFragment","checkCl...

e","startLength","hooks","_queueHooks","unshift","stop","setter","clearQueue","tmp","count","defer","pnum","source","rcssNum","cssExpand","isAttached","composed","getRootNode","isHiddenWithinTree","style","display","css","adjustCSS","valueParts","tween","adjusted","scale","maxIterations","currentValue","initial","unit","cssNumber","initialInUnit","defaultDisplayMap","showHide","show","values","body","hide","toggle","div","rcheckableType","rtagName","rscriptType","createDocumentFragment","checkCl...

arsePostFormat","time","formats","isCalendarSpec","sod","startOf","calendarFormat","asFloat","that","zoneDelta","endOf","startOfDate","isoWeekday","inputString","postformat","withoutSuffix","humanize","fromNow","toNow","invalidAt","localInput","isBetween","inclusivity","localFrom","localTo","isSame","inputMs","isSameOrAfter","isSameOrBefore","parsingFlags","prioritized","unitsObj","u","getPrioritizedUnits","toArray","toObject","toDate","toISOString","keepOffset","inspect","prefix","suffix","zone...

ueOf()<this.clone().startOf(a).valueOf())},yt.isBefore=function(e,a){var t=D(e)?e:Ha(e);return!(!this.isValid()||!t.isValid())&&("millisecond"===(a=N(a)||"millisecond")?this.valueOf()<t.valueOf():this.clone().endOf(a).valueOf()<t.valueOf())},yt.isBetween=function(e,a,t,s){var n=D(e)?e:Ha(e),r=D(a)?a:Ha(a);return!!(this.isValid()&&n.isValid()&&r.isValid())&&(("("===(s=s||"()")[0]?this.isAfter(n,t):!this.isBefore(n,t))&&(")"===s[1]?this.isBefore(r,t):!this.isAfter(r,t)))},yt.isSame=function(e,a){var...