kou commented on code in PR #45550:
URL: https://github.com/apache/arrow/pull/45550#discussion_r1968941969
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python/pyarrow/array.pxi:
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@@ -704,6 +707,95 @@ def _restore_array(data):
return pyarrow_wrap_array(MakeArray(ad))
+cdef class ArrayStatistics(_Weakrefable):
+ """
+ The class for statistics of an array.
+ """
+
+ def __init__(self):
+ raise TypeError("Do not call {}'s constructor directly"
+ .format(self.__class__.__name__))
+
+ cdef void init(self, const shared_ptr[CArrayStatistics]& sp_statistics)
except *:
+ self.sp_statistics = sp_statistics
+
+ def __repr__(self):
+ return ("arrow.ArrayStatistics<null_count={}, distinct_count={}, "
+ "min={}, is_min_exact={}, max={}, is_max_exact={}>"
+ .format(self.null_count, self.distinct_count, self.min,
+ self.is_min_exact, self.max, self.is_max_exact))
+
+ @property
+ def null_count(self):
+ """
+ The number of nulls.
+ """
+ null_count = self.sp_statistics.get().null_count
+ if null_count.has_value():
+ return null_count.value()
+ else:
+ return None
Review Comment:
Thanks! I've added a comment that refers the issue.
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