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Containers stats is broken in Docker-py 6.1.0  #3118

@nicolargo

Description

@nicolargo

Look like Docker-Py breaks the API to retrieve stats from containers.

With Docker 6.0.1 (on Ubuntu 22.04):

>>> import docker
>>> c = docker..from_env()
>>> for i in c.containers.list():
...     i.stats(decode=True)
... 
<generator object APIClient._stream_helper at 0x7f236f354eb0>

With Docker 6.1.0:

>>> import docker
>>> c = docker..from_env()
>>> for i in c.containers.list():
...     i.stats(decode=True)
... 
Never return anything...

Additional information:

$ cat /etc/os-release 
PRETTY_NAME="Ubuntu 22.04.2 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.2 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

$ docker version
Client: Docker Engine - Community
 Version:           23.0.1
 API version:       1.42
 Go version:        go1.19.5
 Git commit:        a5ee5b1
 Built:             Thu Feb  9 19:46:56 2023
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          23.0.1
  API version:      1.42 (minimum version 1.12)
  Go version:       go1.19.5
  Git commit:       bc3805a
  Built:            Thu Feb  9 19:46:56 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.19
  GitCommit:        1e1ea6e986c6c86565bc33d52e34b81b3e2bc71f
 runc:
  Version:          1.1.4
  GitCommit:        v1.1.4-0-g5fd4c4d
 docker-init:
  Version:          0.19.0

Source: nicolargo/glances#2366

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