fsaintjacques commented on a change in pull request #7223:
URL: https://github.com/apache/arrow/pull/7223#discussion_r434275238



##########
File path: python/pyarrow/_csv.pyx
##########
@@ -296,10 +297,31 @@ cdef class ParseOptions:
         out.options = options
         return out
 
-    def __reduce__(self):
-        return ParseOptions, (self.delimiter, self.quote_char,
-                              self.double_quote, self.escape_char,
-                              self.newlines_in_values, self.ignore_empty_lines)
+    def __getstate__(self):
+        return (self.delimiter, self.quote_char, self.double_quote,
+                self.escape_char, self.newlines_in_values,
+                self.ignore_empty_lines)
+
+    def __setstate__(self, state):
+        (self.delimiter, self.quote_char, self.double_quote,
+         self.escape_char, self.newlines_in_values,
+         self.ignore_empty_lines) = state
+
+
+cdef class _ISO8601:
+    """
+    A special object indicating ISO-8601 parsing.

Review comment:
       Good ux feature, I'll take note.




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