### Author:  [@tomerl](https://discuss.elastic.co/u/tomerl)
#### Post date: [December 16, 2018, 5:14pm UTC](https://discuss.elastic.co/t/curator-api-returns-none/161039/1 "2018-12-16T17:14:57Z")
Hi there,
I'm attempting to write a python code that will perform the actions that I'm currently doing in the curator-cli. The goal is to have Lambda that will perform several actions that are related but not restricted to ELK and Curator.
Some actions I was able to perform while others are not clear as to why they aren't working.
For example, snapshots are successful, but any indices actions fails.
Using this code:
```
client = elasticsearch.Elasticsearch()
ilo = curator.IndexList(client)
print(ilo)
```
This will print all the indices, but if I'll do:
```
ilo = curator.IndexList(client).filter_by_regex(kind='prefix', value='kubernetes-')
curator.Replicas(ilo,count='2').do_action()
```
It will fail with:
**TypeError: Not an IndexList object. Type: \.**
Any idea?
---
### Author:  [@theuntergeek](https://discuss.elastic.co/u/theuntergeek)
#### Post date: [December 16, 2018, 6:11pm UTC](https://discuss.elastic.co/t/curator-api-returns-none/161039/2 "2018-12-16T18:11:12Z")
You cannot do it this way. The object has to first be instantiated.
```auto
ilo = curator.IndexList(client)
ilo.filter_by_regex(kind='prefix', value='Kubernetes-')
curator.Replicas(ilo, count=2).do_action()
```
The above should work. 3 steps instead of 2. If it doesn't, then do the same with the `Replicas` object. Instantiate first, then `do_action()`.
---
### Author:  [@theuntergeek](https://discuss.elastic.co/u/theuntergeek)
#### Post date: [December 16, 2018, 6:17pm UTC](https://discuss.elastic.co/t/curator-api-returns-none/161039/3 "2018-12-16T18:17:27Z")
I should probably point out that you got that result because you're assigning the
_output_ of an object `method` (`filter_by_regex`) to `ilo`, rather than making `ilo` an object by instantiating it on its own. Because of this, you cannot pass `ilo` to `curator.Replicas`, because it's not actually an `IndexList` object.
---
### Author:  [@tomerl](https://discuss.elastic.co/u/tomerl)
#### Post date: [December 16, 2018, 6:35pm UTC](https://discuss.elastic.co/t/curator-api-returns-none/161039/4 "2018-12-16T18:35:04Z")
Thanks, it worked out.
So, if using the filter, how can I retrieve and print the index list that was filtered out?
---
### Author:  [@theuntergeek](https://discuss.elastic.co/u/theuntergeek)
#### Post date: [December 16, 2018, 6:59pm UTC](https://discuss.elastic.co/t/curator-api-returns-none/161039/5 "2018-12-16T18:59:32Z")
Once you have an `IndexList` object, the working list is always stored in the [`indices` instance variable](https://curator.readthedocs.io/en/v5.6.0/objectclasses.html#curator.indexlist.IndexList.indices) (it's in the documentation, but the methods and variables are, unfortunately, listed alphabetically, so it's down the page pretty far).
```auto
ilo = curator.IndexList(client)
print(ilo.indices) # Prints all discovered indices (the current working list)
ilo.filter_by_regex(kind='prefix', value='kubernetes-')
print(ilo.indices) # Prints the current working list (post-filter)
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 13, 2019, 7:13pm UTC](https://discuss.elastic.co/t/curator-api-returns-none/161039/6 "2019-01-13T19:13:36Z")
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