blocks|key|2369567|text|rejectattr确实是实现目标的关键过滤器之一，但还需要更多的东西。下面是从您拥有的字典变量中删除该特定键的正确过滤器序列：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2369568|攻略：|2369569|---
-+hosts:+localhost
++gather_facts:+false
++vars:
++++instance_filter:
++++++tag:environment:+qa
++++++tag:instance_id:+i-123456789

++tasks:
++-+name:+print+var
++++debug:
++++++var:+instance_filter

++-+name:+manipulate+the+var
++++debug:
++++++msg:+"{{+instance_filter+%7C+dict2items+%7C+rejectattr('key',+'equalto',+'tag:instance_id')+%7C+list+%7C+items2dict+}}"|code-block|syntax|javascript|2369570|输出：|2369571|PLAY+[localhost]+*******************************************************************************************************************************************************************************************************

TASK+[print+var]+*******************************************************************************************************************************************************************************************************
ok:+[localhost]+=>+{
++++"instance_filter":+{
++++++++"tag:environment":+"qa",
++++++++"tag:instance_id":+"i-123456789"
++++}
}

TASK+[manipulate+the+var]+**********************************************************************************************************************************************************************************************
ok:+[localhost]+=>+{
++++"msg":+{
++++++++"tag:environment":+"qa"
++++}
}

PLAY+RECAP+*************************************************************************************************************************************************************************************************************
localhost++++++++++++++++++:+ok=2++++changed=0++++unreachable=0++++failed=0++++skipped=0++++rescued=0++++ignored=0|2369572|希望能有所帮助。|2369573|entityMap^0|0|A|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|11|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|T|$]]

<p>The <code>rejectattr</code> is indeed one of the key filters to use to achieve your goal, but a few more things are needed. Here is the correct sequence of filters to remove that particular key from the dictionary variable you have:</p>

<h2>Playbook:</h2>

<pre><code>---
- hosts: localhost
  gather_facts: false
  vars:
    instance_filter:
      tag:environment: qa
      tag:instance_id: i-123456789

  tasks:
  - name: print var
    debug:
      var: instance_filter

  - name: manipulate the var
    debug:
      msg: "{{ instance_filter | dict2items | rejectattr('key', 'equalto', 'tag:instance_id') | list | items2dict }}"
</code></pre>

<h2>Output:</h2>

<pre><code>PLAY [localhost] *******************************************************************************************************************************************************************************************************

TASK [print var] *******************************************************************************************************************************************************************************************************
ok: [localhost] =&gt; {
    "instance_filter": {
        "tag:environment": "qa",
        "tag:instance_id": "i-123456789"
    }
}

TASK [manipulate the var] **********************************************************************************************************************************************************************************************
ok: [localhost] =&gt; {
    "msg": {
        "tag:environment": "qa"
    }
}

PLAY RECAP *************************************************************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
</code></pre>

<p>hope it helps.</p>


blocks|key|2365298|text|JSON+Q：“如何删除|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2365299|密钥？”|blockquote|2365300|2365301|2365302|答：create+custom+filter+plugins是可能的。例如|offset|length|2365303|$+cat+filter_plugins/dict_utils.py
def+dict_del_key(d,+key):
++++del+d[key]
++++return+d

class+FilterModule(object):
++++'''+Ansible+filters.+Interface+to+Python+dictionary+methods.'''

++++def+filters(self):
++++++++return+{
++++++++++++'dict_del_key'+:+dict_del_key
++++++++}|code-block|syntax|javascript|2365304|下面的剧本|2365305|-+hosts:+localhost
++vars:
++++dict:
++++++'tag:environment':+'qa'+
++++++'tag:instance_id':+'i-123456789'
++tasks:
++++-+debug:
++++++++msg:+"{{+dict%7Cdict_del_key('tag:instance_id')+}}"|2365306|给出|2365307|++msg:
++++tag:environment:+qa|2365308|​|2365309|2365310|备注：|2365311|2365312|请参见If+you+quote+those+config+keys,+they+will+become+strings.|2365313|See+7.3.2.+Single-Quoted+Style.|unordered-list-item|2365314|
|2365315|FWIW.和|2365316|+7.3.1.+Double-Quoted+Style之间的区别查看GitHub.|2365317|上提供的其他过滤器|2365318|2365319|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.ansible.com/ansible/latest/dev_guide/developing_plugins.html#filter-plugins|1|https://stackoverflow.com/questions/53294414/ansible-dictionary-key-as-variable|2|https://yaml.org/spec/1.2/spec.html#id2788097|3|https://yaml.org/spec/1.2/spec.html#id2787109|4|https://github.com/vbotka/ansible-plugins^0|0|0|0|0|2|S|0|0|0|0|0|0|0|0|0|0|0|3|1K|1|0|4|Q|2|0|0|0|1|Q|3|Y|6|4|0|0|0^^$0|@$1|2|3|4|5|6|7|1X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1Y|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|20|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|21|8|@]|9|@$I|22|J|23|1|24]]|A|$]]|$1|K|3|L|5|M|7|25|8|@]|9|@]|A|$N|O]]|$1|P|3|Q|5|6|7|26|8|@]|9|@]|A|$]]|$1|R|3|S|5|M|7|27|8|@]|9|@]|A|$N|O]]|$1|T|3|U|5|6|7|28|8|@]|9|@]|A|$]]|$1|V|3|W|5|M|7|29|8|@]|9|@]|A|$N|O]]|$1|X|3|Y|5|6|7|2A|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|2B|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|2C|8|@]|9|@]|A|$]]|$1|12|3|Y|5|6|7|2D|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|2E|8|@]|9|@$I|2F|J|2G|1|2H]]|A|$]]|$1|15|3|16|5|17|7|2I|8|@]|9|@$I|2J|J|2K|1|2L]]|A|$]]|$1|18|3|19|5|6|7|2M|8|@]|9|@]|A|$]]|$1|1A|3|1B|5|17|7|2N|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|17|7|2O|8|@]|9|@$I|2P|J|2Q|1|2R]|$I|2S|J|2T|1|2U]]|A|$]]|$1|1E|3|1F|5|6|7|2V|8|@]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|2W|8|@]|9|@]|A|$]]|$1|1H|3|-4|5|6|7|2X|8|@]|9|@]|A|$]]]|1I|$1J|$5|1K|1L|1M|A|$1N|1O]]|1P|$5|1K|1L|1M|A|$1N|1Q]]|1R|$5|1K|1L|1M|A|$1N|1S]]|1T|$5|1K|1L|1M|A|$1N|1U]]|1V|$5|1K|1L|1M|A|$1N|1W]]]]

<blockquote>
  <p>Q: <em>"How do you remove a JSON key?"</em></p>
</blockquote>

<p>A: It's possible to <a href="https://docs.ansible.com/ansible/latest/dev_guide/developing_plugins.html#filter-plugins" rel="nofollow noreferrer">create custom filter plugins</a>. For example</p>

<pre><code>$ cat filter_plugins/dict_utils.py
def dict_del_key(d, key):
    del d[key]
    return d

class FilterModule(object):
    ''' Ansible filters. Interface to Python dictionary methods.'''

    def filters(self):
        return {
            'dict_del_key' : dict_del_key
        }
</code></pre>

<p>The play below</p>

<pre><code>- hosts: localhost
  vars:
    dict:
      'tag:environment': 'qa' 
      'tag:instance_id': 'i-123456789'
  tasks:
    - debug:
        msg: "{{ dict|dict_del_key('tag:instance_id') }}"
</code></pre>

<p>gives</p>

<pre><code>  msg:
    tag:environment: qa
</code></pre>

<p><hr>
Notes:</p>

<ul>
<li>See <a href="https://stackoverflow.com/questions/53294414/ansible-dictionary-key-as-variable">If you quote those config keys, they will become strings</a>.</li>
<li>See the difference between <a href="https://yaml.org/spec/1.2/spec.html#id2787109" rel="nofollow noreferrer">7.3.1. Double-Quoted Style</a> and <a href="https://yaml.org/spec/1.2/spec.html#id2788097" rel="nofollow noreferrer">7.3.2. Single-Quoted Style</a>.</li>
<li>FWIW. See other filters available at <a href="https://github.com/vbotka/ansible-plugins" rel="nofollow noreferrer">GitHub</a>.</li>
</ul>


<p>How do you remove a json Key that contains a colon (:) with jinja2 rejectattr.</p>

<h1>Environment:</h1>

<pre><code>ansible 2.9.1
  config file = None
  configured module search path = [u'/home/&lt;user&gt;/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.15+ (default, Oct  7 2019, 17:39:04) [GCC 7.4.0]
</code></pre>

<p>json data:</p>

<pre><code>   {
        "tag:environment": "qa", 
        "tag:instance_id": "i-123456789"
    }

</code></pre>

<h1>Ansible playbook:</h1>

<pre><code>- name: Remove InstanceID
  debug:
    msg:  "{{ instance_filter | rejectattr('['tag:environment'], 'defined' ') | list  }}
</code></pre>

<h1>Actual Results:</h1>

<pre><code>fatal: [localhost]: FAILED! =&gt; {
    "msg": "template error while templating string: expected token ',', got 'tag'. String: {{ instance_filter | rejectattr('['tag:environment'], 'defined' ') | list  }}"
}

</code></pre>

<h1>Expected results:</h1>

<pre><code>
   {
        "tag:environment": "qa"
   }
</code></pre>


Ansible: json element strip key with colon

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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如何删除包含冒号(:)和jinja2 rejectattr的json键。环境：ansible 2.9.1  config file = None  configured module search path = [u'/home/<user>/.ansible/plugins/modules', u'/usr/shar...

问Ansible:带冒号的json元素条形键
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