Update cast.py

pandas-dev · Oct 1, 2023 · f0836eb · f0836eb
1 parent f18fa44
commit f0836eb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pandas/core/dtypes/cast.py b/pandas/core/dtypes/cast.py
@@ -1133,7 +1133,7 @@ def convert_dtypes(
                 base_dtype = np.dtype(str)
             else:
                 base_dtype = inferred_dtype
-            if base_dtype.kind == "O" and isna(input_array).all():
+            if base_dtype.kind == "O" and len(input_array) > 0 and isna(input_array).all():
                 import pyarrow as pa
 
                 pa_type = pa.null()