模板中字母范围的Ansible循环

问题描述

我正在尝试生成一个Ansible模板，该模板以字母而不是数字递增字母.是否有类似于range(x)的功能可以帮助我?

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 %}

预期产量

a
b
c
d

或者有一种方法可以将数字转换为Ansible中的字母等价形式?

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，这就是我最终应用@zigam的解决方案的方式.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.

我的角色默认为:

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 %}

如果要遍历一个字母范围:

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

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

这篇关于模板中字母范围的Ansible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！