pandas.StringDtype.na_value#

property StringDtype.na_value[source]#

The missing value representation for this dtype.

This value indicates which missing value semantics are used by this dtype. Returns np.nan for the default string dtype with NumPy semantics, and pd.NA for the opt-in string dtype with pandas NA semantics.

See also

isna: Detect missing values.
NA: Missing value indicator for nullable dtypes.

Examples

>>> ser = pd.Series(["a", "b"])
>>> ser.dtype
<StringDtype(na_value=nan)>
>>> ser.dtype.na_value
nan