fix mypy

jorisvandenbossche · jorisvandenbossche · commit 73d9de2b1795 · 2021-02-05T13:57:14.000+01:00
diff --git a/pandas/core/internals/concat.py b/pandas/core/internals/concat.py
@@ -71,7 +71,8 @@ def concatenate_array_managers(
         ]
         return ArrayManager(arrays, [axes[1], axes[0]], do_integrity_check=False)
     # concatting along the columns -> combine reindexed arrays in a single manager
-    elif concat_axis == 0:
+    else:
+        assert concat_axis == 0
         arrays = list(itertools.chain.from_iterable([mgr.arrays for mgr in mgrs]))
         return ArrayManager(arrays, [axes[1], axes[0]], do_integrity_check=False)
 

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,8 @@ def concatenate_array_managers(`
`71`	`71`	`]`
`72`	`72`	`return ArrayManager(arrays, [axes[1], axes[0]], do_integrity_check=False)`
`73`	`73`	`# concatting along the columns -> combine reindexed arrays in a single manager`
`74`		`- elif concat_axis == 0:`
	`74`	`+ else:`
	`75`	`+ assert concat_axis == 0`
`75`	`76`	`arrays = list(itertools.chain.from_iterable([mgr.arrays for mgr in mgrs]))`
`76`	`77`	`return ArrayManager(arrays, [axes[1], axes[0]], do_integrity_check=False)`
`77`	`78`