Ansible 在模板中的字母范围内循环 [英] Ansible loop over range of letters in template

问题描述

我正在尝试生成一个 Ansible 模板，该模板按字母顺序而不是数字递增.有没有类似于 range(x) 的函数可以帮助我?

I'm trying to generate an Ansible template that increments on letters alphabetically rather than numbers. Is there a function similar to range(x) that could help me?

伪代码示例

{% for letter in range(a, d) %}
{{ letter }}
{% endfor %}

预期输出

a
b
c
d

或者，有没有办法在 Ansible 中将数字转换为对应的字母顺序?

Alternatively is there a way to convert a number into it's alphabetical equivalent in Ansible?

{% for i in range(6) %}
{{ convert(i) }}
{% endfor %}

更新

对于那些好奇的人，以下是我最终应用@zigam 解决方案的方式.目标是为主机组中的每个主机创建 xml 标记.

UPDATE

For those who are curious, here's how I ended up applying @zigam's solution. The goal was to create xml tags with every host from a hostgroup.

在我的角色中默认:

ids: "ABCDEFGHIGJKLMNPQRSTUVWXYZ"

在我的模板中:

{% for host in groups['some_group'] %}
<host-id="{{ ids[loop.index] }}" hostName="{{ host }}" port="8888" />
{% endfor %}

推荐答案

您可以遍历字符串:

 {% for letter in 'abcd' %}
 {{ letter }}
 {% endfor %}

如果你想遍历一个范围的字母表:

If you want to iterate over a range of the alphabet:

 {% set letters='abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' %}
 {% for letter in letters[:6] %} {# first 6 chars #}
 {{ letter }}
 {% endfor %}

这篇关于Ansible 在模板中的字母范围内循环的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！