# xarray.core.accessor_str.StringAccessor.normalize

#### StringAccessor.normalize(form)[[source]](https://github.com/pydata/xarray/blob/main/xarray/core/accessor_str.py#L843-L863)

Return the Unicode normal form for the strings in the datarray.

For more information on the forms, see the documentation for
[`unicodedata.normalize()`](https://docs.python.org/3/library/unicodedata.html#unicodedata.normalize).

* **Parameters:**
  **form** (`{"NFC", "NFKC", "NFD", "NFKD"}`) – Unicode form.
* **Returns:**
  **normalized** (`same type as values`)