SDK ExamplebeginnerSDK Examples
Env Reader (SDK: os.environ)
Reads an environment variable by name via os.environ.get(). Returns the value and a boolean indicating whether it was set. Simple example of system integration.
class EnvReaderNode(BaseNode)SDK Node · System
SDK Features Demonstrated
Python BaseNode SDK
from src.nodes.base import BaseNode
class EnvReaderNode(BaseNode):
→ execute()
→ os.environ
→ bool output
Port preview
Tags
#sdk#environment#os.environ#system#execute
Source
examples/nodes/env_reader.py
Python BaseNode subclass demonstrating SDK patterns
Related Examples
Browse all →class MathSquareNode(BaseNode):
→ use_exec=False
→ set_output()
Math Square (SDK: use_exec=False)
beginnerA data-only node (use_exec=False) that squares an input number. Demonstrates set_output(), log_info(), and icon_path — the minimal data-flow node pattern.
use_exec=Falseset_output()log_info()
#sdk#use_exec#data-flow
class ConnectionLoggerNode(BaseNode):
→ on_plug_sync()
→ on_unplug_sync()
Connection Logger (SDK: Lifecycle Hooks)
beginnerDemonstrates on_plug_sync and on_unplug_sync lifecycle hooks. Logs a message each time a wire is connected or disconnected, showing the plug/unplug event system.
on_plug_sync()on_unplug_sync()log_info()
#sdk#on_plug_sync#on_unplug_sync
class DropdownSelectorNode(BaseNode):
→ use_exec=False
→ widget_type="dropdown"
Dropdown Selector (SDK: Widget Options)
beginnerA use_exec=False node with a dropdown widget: options list is defined in add_input(). Demonstrates how to build UI select menus in Python BaseNode subclasses.
use_exec=Falsewidget_type="dropdown"options list
#sdk#dropdown#widget_type