Error

TASK [Ensure python is installed] ************************************************************************************************************************************************************************************
task path: /opt/openstack-ansible/playbooks/openstack-hosts-setup.yml:27
container_name: "host-compute-01"
physical_host: "host-compute-01"
<172.30.5.14> ESTABLISH SSH CONNECTION FOR USER: root
<172.30.5.14> SSH: EXEC ssh -C -o ControlMaster=auto -o ControlPersist=300 -o StrictHostKeyChecking=no -o Port=22 -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=5 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o ServerAliveInterval=64 -o ServerAliveCountMax=1024 -o Compression=no -o TCPKeepAlive=yes -o VerifyHostKeyDNS=no -o ForwardX11=no -o ForwardAgent=yes -T -o 'ControlPath="/root/.ansible/cp/9ec49ecdd5"' -tt 172.30.5.14 'if which apt-get >/dev/null && ! which python >/dev/null ; then
  if ! which python3 >/dev/null ; then
    apt-get -y install python3
  fi
  update-alternatives --install /usr/bin/python python /usr/bin/python3 10
  exit 2
else
  exit 0
fi
'
container_name: "host-compute-02"
physical_host: "host-compute-02"
<172.30.5.15> ESTABLISH SSH CONNECTION FOR USER: root
<172.30.5.15> SSH: EXEC ssh -C -o ControlMaster=auto -o ControlPersist=300 -o StrictHostKeyChecking=no -o Port=22 -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=5 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o ServerAliveInterval=64 -o ServerAliveCountMax=1024 -o Compression=no -o TCPKeepAlive=yes -o VerifyHostKeyDNS=no -o ForwardX11=no -o ForwardAgent=yes -T -o 'ControlPath="/root/.ansible/cp/5b8f3c4b63"' -tt 172.30.5.15 'if which apt-get >/dev/null && ! which python >/dev/null ; then
  if ! which python3 >/dev/null ; then
    apt-get -y install python3
  fi
  update-alternatives --install /usr/bin/python python /usr/bin/python3 10
  exit 2
else
  exit 0
fi
'
container_name: "host-compute-03"
physical_host: "host-compute-03"
<172.30.5.16> ESTABLISH SSH CONNECTION FOR USER: root
<172.30.5.16> SSH: EXEC ssh -C -o ControlMaster=auto -o ControlPersist=300 -o StrictHostKeyChecking=no -o Port=22 -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=5 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o ServerAliveInterval=64 -o ServerAliveCountMax=1024 -o Compression=no -o TCPKeepAlive=yes -o VerifyHostKeyDNS=no -o ForwardX11=no -o ForwardAgent=yes -T -o 'ControlPath="/root/.ansible/cp/aa204a5202"' -tt 172.30.5.16 'if which apt-get >/dev/null && ! which python >/dev/null ; then
  if ! which python3 >/dev/null ; then
    apt-get -y install python3
  fi
  update-alternatives --install /usr/bin/python python /usr/bin/python3 10
  exit 2
else
  exit 0
fi
'