# How does "set\_hashes" work ?

**URL:** <https://support.prodi.gy/t/how-does-set-hashes-work/5686>\
**Category:** Uncategorized\
**Tags:** usage, solved\
**Created:** [June 3, 2022, 11:56am UTC](https://support.prodi.gy/t/how-does-set-hashes-work/5686 "2022-06-03T11:56:03Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![koaning](https://sea2.discourse-cdn.com/flex020/user_avatar/support.prodi.gy/koaning/32/230_2.png) [@koaning](https://support.prodi.gy/u/koaning)\
**Post date:** [June 3, 2022, 12:23pm UTC](https://support.prodi.gy/t/how-does-set-hashes-work/5686/2 "2022-06-03T12:23:40Z")

</div>

Hi Jim. You have stumbled apon a keyname that's in the default ignore list and I can totally imagine the confusion. Let's go over it step-by-step.

If the key is just `text`, nothing unexpected is happening.

```python
from prodigy import set_hashes 

paths = ["a", "b", "c"]

[set_hashes({"text": p}) for p in paths]
# [{'text': 'a', '_input_hash': -1808989213, '_task_hash': -1053809049},
# {'text': 'b', '_input_hash': 748838038, '_task_hash': -150095526},
# {'text': 'c', '_input_hash': -600324218, '_task_hash': 1805703639}]

```

Same with the key "paths". Note the extra `,` by the way, I want the `input_keys` to be a tuple!

```python
[set_hashes({"paths": p}, input_keys=("paths", )) for p in paths]
# [{'paths': 'a', '_input_hash': -895075480, '_task_hash': 652594778},
# {'paths': 'b', '_input_hash': -501196447, '_task_hash': 144266571},
# {'paths': 'c', '_input_hash': -451190452, '_task_hash': 884629090}]

```

But once I call it `path`, it's all different.

```python
[set_hashes({"path": p}) for p in paths]
# [{'path': 'a', '_input_hash': -1979175224, '_task_hash': -1952772507},
# {'path': 'b', '_input_hash': -1979175224, '_task_hash': -1952772507},
# {'path': 'c', '_input_hash': -1979175224, '_task_hash': -1952772507}]

```

That's because of the `ignore` parameter ([docs](https://prodi.gy/docs/api-components#set_hashes)). This has the following defaults (copied from source code):

```python
IGNORE_HASH_KEYS = ("score", "rank", "model", "source", "pattern", "priority", "path", VIEW_ID_ATTR, SESSION_ID_ATTR, ANNOTATOR_ID_ATTR, "answer")

```

Notice that `path` is in there.

We can fix it via;

```python
[set_hashes({"path": p}, ignore=[]) for p in paths]
# [{'path': 'a', '_input_hash': -1378317001, '_task_hash': -1022972960},
# {'path': 'b', '_input_hash': -730857728, '_task_hash': -945938464},
# {'path': 'c', '_input_hash': -82246316, '_task_hash': -1983325868}]

```

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_[View the full topic](https://support.prodi.gy/t/how-does-set-hashes-work/5686)._