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我搜索並試圖用各種方法將列表分成兩個列表。 沒有傳統的過濾器或任何支持。 有一些關於將列表合併成一個的例子和文章,但沒有其他方法。Ansible - 如何將列表分成兩個列表?
我在代碼下面開發,但它不工作,很奇怪的原因,列表沒有屬性0?
---
- hosts: localhost
gather_facts: no
vars:
- listA: ['a','b','c','d']
- listB: []
- listC: []
tasks:
- block:
- debug:
var: listA[0]
- debug:
var: listB
- debug:
var: listC
- set_fact:
listB: "{{ listB + [listA[item]] }}"
with_sequence: start=0 end=3 stride=2
- set_fact:
listC: "{{ listC + [listA[item]] }}"
with_sequence: start=1 end=3 stride=2
- block:
- debug:
var: listA
- debug:
var: listB
- debug:
var: listC
這是試運行結果與Ansible 2.1.1.0
$ ansible-playbook test_sequenceeasy.yml
[WARNING]: log file at '{{planfile | dirname}}/AnsibleLog.txt' is not writeable and we cannot create it, aborting
PLAY [localhost] ***************************************************************
TASK [debug] *******************************************************************
ok: [localhost] => {
"listA[0]": "a"
}
TASK [debug] *******************************************************************
ok: [localhost] => {
"listB": []
}
TASK [debug] *******************************************************************
ok: [localhost] => {
"listC": []
}
TASK [set_fact] ****************************************************************
fatal: [localhost]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'list object' has no attribute u'0'\n\nThe error appears to have been in '/apps/infra/Tools/Ansible_WLNMiddleware/test_sequenceeasy.yml': line 17, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n var: listC\n - set_fact:\n ^here\n"}
NO MORE HOSTS LEFT *************************************************************
[WARNING]: Could not create retry file 'test_sequenceeasy.retry'. [Errno 2] No such file or directory: ''
https://github.com/ansible/ansible/issues/17852 – techraf
感謝techraf爲把它提出來討論 – user3376413