panbingkun commented on code in PR #46880:
URL: https://github.com/apache/spark/pull/46880#discussion_r1746589320
##########
python/pyspark/sql/functions/builtin.py:
##########
@@ -11241,13 +11241,18 @@ def sentences(
) -> Column:
"""
Splits a string into arrays of sentences, where each sentence is an array
of words.
- The 'language' and 'country' arguments are optional, and if omitted, the
default locale is used.
+ The `language` and `country` arguments are optional,
+ if they are both omitted, the default locale (the language is 'en' and the
country is 'US')
+ is used, if the `country` is omitted, the default `country` ('') is used.
Review Comment:
I updated the comments like this:
```
* The `lang` and `country` arguments are optional, their default values are
all '',
* - When they are omitted:
* 1. If they are both omitted, the `locale(language='', country='')` is
used.
* 2. If the `country` is omitted, the `locale(language, country='')` is
used.
* - When they are null:
* 1. If they are both `null`, the `Locale.US - locale(language='en',
country='US')` is used.
* 2. If the `language` is null and the `country` is not null,
* the `Locale.US - locale(language='en', country='US')` is used.
* 3. If the `language` is not null and the `country` is null, the
`locale(language)` is used.
* 4. If neither is `null`, the `locale(language, country)` is used.
```
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