fixed comparison of string column to mixed object column (issue pandas-dev#60228)

Author: TEARFEAR

pandas/core/ops/array_ops.py

@@ -38,6 +38,7 @@
     is_bool_dtype,
     is_list_like,
     is_numeric_v_string_like,
+    is_string_dtype,
     is_object_dtype,
     is_scalar,
 )
@@ -53,7 +54,7 @@
 
 from pandas.core import roperator
 from pandas.core.computation import expressions
-from pandas.core.construction import ensure_wrapped_if_datetimelike
+from pandas.core.construction import ensure_wrapped_if_datetimelike, array
 from pandas.core.ops import missing
 from pandas.core.ops.dispatch import should_extension_dispatch
 from pandas.core.ops.invalid import invalid_comparison
@@ -321,6 +322,17 @@ def comparison_op(left: ArrayLike, right: Any, op) -> ArrayLike:
                 "Lengths must match to compare", lvalues.shape, rvalues.shape
             )
 
+    if (
+            (is_string_dtype(lvalues) and is_object_dtype(rvalues)) or
+            (is_object_dtype(lvalues) and is_string_dtype(rvalues))
+    ):
+        if lvalues.dtype.name == "string" and rvalues.dtype == object:
+            lvalues = lvalues.astype("string")
+            rvalues = array(rvalues, dtype="string")
+        elif rvalues.dtype.name == "string" and lvalues.dtype == object:
+            rvalues = rvalues.astype("string")
+            lvalues = array(lvalues, dtype="string")
+
     if should_extension_dispatch(lvalues, rvalues) or (
         (isinstance(rvalues, (Timedelta, BaseOffset, Timestamp)) or right is NaT)
         and lvalues.dtype != object