[GitHub] [arrow] lidavidm commented on a change in pull request #12054: ARROW-15219: [Python] Export the random compute function

[GitBox <gi...@apache.org>]

lidavidm commented on a change in pull request #12054:
URL: https://github.com/apache/arrow/pull/12054#discussion_r776817289



##########
File path: python/pyarrow/_compute.pyx
##########
@@ -1331,6 +1331,32 @@ class Utf8NormalizeOptions(_Utf8NormalizeOptions):
         self._set_options(form)
 
 
+cdef class _RandomOptions(FunctionOptions):
+    def _set_options(self, length, initializer):
+        if initializer == 'system':
+            self.wrapped.reset(new CRandomOptions(
+                CRandomOptions.FromSystemRandom(length)))
+            return
+
+        if not isinstance(initializer, int):
+            try:
+                initializer = hash(initializer)
+            except TypeError:
+                raise TypeError(
+                    f"initializer should be 'system', an integer, "
+                    f"or a hashable object; got {initializer!r}")

Review comment:
       Is it useful to `raise from` here to preserve the original context?




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