Vladimir Botka
2020-12-02 07:48:34
问：“按主题对数据进行分组，并创建一个主题列表，每个主题词典都包含该主题的所有数据”
答：下面的任务
- set_fact:
list_subj: "{{ list_subj|default([]) + [{item.0: item.1}] }}"
loop: "{{ data_list|groupby('subject') }}"
- debug:
var: list_subj
给出字典列表
list_subj:
- Biology:
- grade:
- A
id: 30
subject: Biology
- Math:
- grade:
- B
id: 40
subject: Math
- Physics:
- grade:
- A+
id: 31
subject: Physics
- grade:
- A+
id: 33
subject: Physics
- grade:
- A+
- B+
id: 35
subject: Physics
但是，在这里词典可能更实用。例如
- set_fact:
dict_subj: "{{ dict(data_list|groupby('subject')) }}"
- debug:
var: dict_subj
给
dict_subj:
Biology:
- grade:
- A
id: 30
subject: Biology
Math:
- grade:
- B
id: 40
subject: Math
Physics:
- grade:
- A+
id: 31
subject: Physics
- grade:
- A+
id: 33
subject: Physics
- grade:
- A+
- B+
id: 35
subject: Physics
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谢谢，但我仍然得到将字符串分解为单个字符的输出。“ [{item.0：item.1}]”有什么作用？
是什么让您无法看一眼
- debug: msg: "{{ [{item.0: item.1}] }}"循环中的？我是ansible的新手，因此不确定如何在循环中进行调试，但是现在我知道了，感谢您的帮助。按照您的建议使用字典效果更好。