[Unified Compiler] Renaming python_compiler into unified_compiler

doc/releases/changelog-dev.md

@@ -101,6 +101,10 @@
 
 <h3>Internal changes ⚙️</h3>
 
+* The `qml.compiler.python_compiler` module in PennyLane has been renamed `qml.compiler.unified_compiler`.
+  Catalyst has been updated to reflect this change.
+  [(#1997)](https://github.com/PennyLaneAI/pennylane/pull/1997)
+
 * Updates use of `qml.transforms.dynamic_one_shot.parse_native_mid_circuit_measurements` to improved signature.
   [(#1953)](https://github.com/PennyLaneAI/catalyst/pull/1953)
 

frontend/catalyst/compiler.py

@@ -471,7 +471,7 @@ def run_from_ir(self, ir: str, module_name: str, workspace: Directory):
         return output_object_name, out_IR
 
     @debug_logger
-    def is_using_python_compiler(self):
+    def is_using_unified_compiler(self):
         """Returns true if we detect that there is an xdsl plugin in use.
 
         Will also modify self.options.pass_plugins and self.options.dialect_plugins to remove
@@ -509,13 +509,13 @@ def run(self, mlir_module, *args, **kwargs):
             (str): filename of shared object
         """
 
-        if self.is_using_python_compiler():
+        if self.is_using_unified_compiler():
             # We keep this module here to keep xDSL requirement optional
             # Only move this is it has been decided that xDSL is no longer optional.
             # pylint: disable-next=import-outside-toplevel
-            from pennylane.compiler.python_compiler import Compiler as PythonCompiler
+            from pennylane.compiler.unified_compiler import Compiler as UnifiedCompiler
 
-            compiler = PythonCompiler()
+            compiler = UnifiedCompiler()
             mlir_module = compiler.run(mlir_module)
 
         return self.run_from_ir(