new JWDatetimeString node

__init__.py

@@ -11,6 +11,7 @@ NODE_MODULES = [
     ".comfyui_raft",
     ".comfyui_image_channel_ops",
     ".comfyui_color_ops",
+    ".comfyui_datetime",
 ]
 
 # Extra nodes for my own use

comfyui_datetime.py

@@ -0,0 +1,42 @@
+from datetime import datetime
+
+NODE_CLASS_MAPPINGS = {}
+NODE_DISPLAY_NAME_MAPPINGS = {}
+
+
+def register_node(identifier: str, display_name: str):
+    def decorator(cls):
+        NODE_CLASS_MAPPINGS[identifier] = cls
+        NODE_DISPLAY_NAME_MAPPINGS[identifier] = display_name
+
+        return cls
+
+    return decorator
+
+
+@register_node("JWDatetimeString", "Datetime String")
+class _:
+    CATEGORY = "jamesWalker55"
+
+    INPUT_TYPES = lambda: {
+        "required": {
+            "format": ("STRING", {"default": "%Y-%m-%dT%H:%M:%SZ"}),
+        }
+    }
+
+    RETURN_NAMES = ("STRING",)
+    RETURN_TYPES = ("STRING",)
+
+    OUTPUT_NODE = False
+
+    FUNCTION = "execute"
+
+    def execute(self, format: str):
+        now = datetime.now()
+        return (now.strftime(format),)
+
+    @classmethod
+    def IS_CHANGED(cls, *args):
+        # This value will be compared with previous 'IS_CHANGED' outputs
+        # If inequal, then this node will be considered as modified
+        return object()