Jinja2 replace string with '.' joiner

Question

I search the best method to replace last number of an IP with Jinja2.

I need to replace the last octet of the IP:

{% set ip = "192.168.1.1" %}
{% set points == ip.split('.') %}
{{ points | last | replace (points | last , "0") }}

Result: 0
Desired result: 192.168.1.0

score 1 · Accepted Answer · answered Nov 13 '20 at 17:39

You can use Python's slicing in order to get all the list elements except the last one with a negative index, then

either concatenate a list containing your new element and finally join
```
{{ ("192.168.1.1".split(".")[:-1] + ["0"]) | join(".") }}
```
or join and then concatenate with a string with your new element
```
{{ "192.168.1.1".split(".")[:-1] | join(".") + ".0" }}
```

1 Answers1