replaced remaining print statements with log.*()

invokeai/backend/generate.py

@@ -1088,7 +1088,7 @@ class Generate:
             image = img
             log.info(f"using provided input image of size {image.width}x{image.height}")
         elif isinstance(img, str):
-            assert os.path.exists(img), f">> {img}: File not found"
+            assert os.path.exists(img), f"{img}: File not found"
 
             image = Image.open(img)
             log.info(

invokeai/backend/util/logging.py

@@ -1,5 +1,6 @@
+# Copyright (c) 2023 Lincoln D. Stein and The InvokeAI Development Team
+
 """invokeai.util.logging
-Copyright 2023 The InvokeAI Development Team
 
 Logging class for InvokeAI that produces console messages that follow
 the conventions established in InvokeAI 1.X through 2.X.