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Add blog post about new signature of HomeAssistant (#1892)

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* Add blog post about new signature of HomeAssistant

* Update 2023-08-29-homeassistant-changed-signature.md

* Update blog/2023-08-29-homeassistant-changed-signature.md

Co-authored-by: Joakim Sørensen <joasoe@gmail.com>

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Co-authored-by: Joakim Sørensen <joasoe@gmail.com>
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Erik Montnemery 2023-09-04 20:55:17 +02:00 committed by GitHub
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---
author: Erik Montnémery
authorURL: https://github.com/emontnemery
title: "HomeAssistant.__init__ requires passing a string to it"
---
The signature of `HomeAssistant.__init__` has been changed from no arguments to require the configuration directory as a string to be passed to it. Scripts, tests etc. outside of the HomeAssistant core repo which create `HomeAssistant` objects will need to be updated.
The change was introduced in [core PR#98442](https://github.com/home-assistant/core/pull/98442)
If backwards compatibility is important, this is a way to achieve it:
```python
try:
hass = HomeAssistant() # pylint: disable=no-value-for-parameter
except TypeError:
hass = HomeAssistant(config_dir) # pylint: disable=too-many-function-args
```