Beispielsweise können Sie [„with“ verwenden, um eine Datei auszulesen](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files):

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

Im Hintergrund erstellt das `open("./somefile.txt")` ein Objekt, das als „Kontextmanager“ bezeichnet wird.

 
## Changes by Kind

### Deprecation

- 'kubeadm: marked the sub-phase of ''init kubelet-finilize'' called ''experimental-cert-rotation''
  as deprecated and print a warning if it is used directly; it will be removed in

-flexbox!important;display:inline-flex!important}}@media print{.d-print-none{display:none!important}.d-print-inline{display:inline!important}.d-print-inline-block{display:inline-block!important}.d-print-block{display:block!important}.d-print-table{display:table!important}.d-print-table-row{display:table-row!important}.d-print-table-cell{display:table-cell!important}.d-print-flex{display:-ms-flexbox!important;display:flex!important}.d-print-inline-flex{display:-ms-inline-flexbox!important;display...

        `method=ResizeMethod.BILINEAR` (the default method). Enable by setting
        the environment variable `TF_DETERMINISTIC_OPS` to `"true"` or `"1"`.
*   `tf.print`:
    *   Bug fix in `tf.print()` with `OrderedDict` where if an `OrderedDict`
        didn't have the keys sorted, the keys and values were not being printed
        in accordance with their correct mapping.
*   `tf.train.Checkpoint`:

- Fix: After a Node is down and take some time to get back to up again, the mount point of the evicted Pods cannot be cleaned up successfully. (#111933) Meanwhile Kubelet will print the log `Orphaned pod "xxx" found, but error not a directory occurred when trying to remove the volumes dir` every 2 seconds. (#105536) ([#116134](https://github.com/kubernetes/kubernetes/pull/116134),...

  This section can be blank if this pull request does not require a release note.
  
  When adding links which point to resources within git repositories, like
  KEPs or supporting documentation, please reference a specific commit and avoid
  linking directly to the master branch. This ensures that links reference a
  specific point in time, rather than a document that may change over time.
  

- Kubeadm: added a new preflight check `ContainerRuntimeVersion ` to validate if the installed container runtime supports the RuntimeConfig gRPC method. If the container runtime does not support the RuntimeConfig gRPC method, kubeadm will print a warning message. 
  

  This section can be blank if this pull request does not require a release note.
  
  When adding links which point to resources within git repositories, like
  KEPs or supporting documentation, please reference a specific commit and avoid
  linking directly to the master branch. This ensures that links reference a
  specific point in time, rather than a document that may change over time.
  

* MESOS: Support a pre-installed km binary at a well known, agent-local path ([#28447](https://github.com/kubernetes/kubernetes/pull/28447), [@k82cn](https://github.com/k82cn))
* kubectl should print usage at the bottom ([#25640](https://github.com/kubernetes/kubernetes/pull/25640), [@dims](https://github.com/dims))

*   Added --print-join-command flag for kubeadm token create. ([#56185](https://github.com/kubernetes/kubernetes/pull/56185),[ @mattmoyer](https://github.com/mattmoyer))