pandas.api.extensions.ExtensionDtype.na_value
- propertyExtensionDtype.na_value[source]
-
Default NA value to use for this type.
This is used in e.g. ExtensionArray.take. This should be the user-facing “boxed” version of the NA value, not the physical NA value for storage. e.g. for JSONArray, this is an empty dictionary.
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https://pandas.pydata.org/pandas-docs/version/1.5.0/reference/api/pandas.api.extensions.ExtensionDtype.na_value.html