fixed typing issue

Gabe Small · Gabe Small · commit c35e8cc2d62d · 2025-04-11T12:40:33.000-05:00
diff --git a/pandas/core/reshape/reshape.py b/pandas/core/reshape/reshape.py
@@ -177,7 +177,7 @@ def _indexer_and_to_sort(
             # setting nans back to nan to maintain the -1 values
             if self.lift:
                 codes = [
-                    factorize(np.where(code == -1, None, code))[0] for code in codes
+                    factorize(np.where(code == -1, np.nan, code))[0] for code in codes
                 ]
             else:
                 codes = [factorize(code)[0] for code in codes]

Original file line number	Diff line number	Diff line change
`@@ -177,7 +177,7 @@ def _indexer_and_to_sort(`
`177`	`177`	`# setting nans back to nan to maintain the -1 values`
`178`	`178`	`if self.lift:`
`179`	`179`	`codes = [`
`180`		`- factorize(np.where(code == -1, None, code))[0] for code in codes`
	`180`	`+ factorize(np.where(code == -1, np.nan, code))[0] for code in codes`
`181`	`181`	`]`
`182`	`182`	`else:`
`183`	`183`	`codes = [factorize(code)[0] for code in codes]`