Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/6601#discussion_r31592040
--- Diff: python/pyspark/sql/dataframe.py ---
@@ -653,9 +627,11 @@ def describe(self, *cols):
@ignore_unicode_prefix
@since(1.3)
def head(self, n=None):
- """
- Returns the first ``n`` rows as a list of :class:`Row`,
- or the first :class:`Row` if ``n`` is ``None.``
+ """Returns the first ``n`` rows.
+
+ If n is greater than 1, return a list of :class:`Row`. If n is 1,
return a single Row.
+
+ :param n: int, default 1.
--- End diff --
head() is different head(1), so we can not say `n` has `1` as default
value.
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