From f3391a45f96e3be0900f7ef0a40b4e61d64785aa Mon Sep 17 00:00:00 2001
From: Patrick Hoefler <61934744+phofl@users.noreply.github.com>
Date: Sat, 12 Aug 2023 14:06:02 +0200
Subject: [PATCH] Backport PR #54498: Speed up string inference in
 maybe_convert_objects

---
 pandas/_libs/lib.pyx | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/pandas/_libs/lib.pyx b/pandas/_libs/lib.pyx
index 55819ebd1f15e..a96152ccdf3cc 100644
--- a/pandas/_libs/lib.pyx
+++ b/pandas/_libs/lib.pyx
@@ -2681,14 +2681,13 @@ def maybe_convert_objects(ndarray[object] objects,
         seen.object_ = True
 
     elif seen.str_:
-        if is_string_array(objects, skipna=True):
-            if using_pyarrow_string_dtype():
-                import pyarrow as pa
+        if using_pyarrow_string_dtype() and is_string_array(objects, skipna=True):
+            import pyarrow as pa
 
-                from pandas.core.dtypes.dtypes import ArrowDtype
+            from pandas.core.dtypes.dtypes import ArrowDtype
 
-                dtype = ArrowDtype(pa.string())
-                return dtype.construct_array_type()._from_sequence(objects, dtype=dtype)
+            dtype = ArrowDtype(pa.string())
+            return dtype.construct_array_type()._from_sequence(objects, dtype=dtype)
 
         seen.object_ = True
     elif seen.interval_: