dify插件初步构建

difyPlugin/app/utils/helpers.py

@@ -0,0 +1,22 @@
+"""工具函数"""
+from typing import Any, Dict
+import json
+from datetime import datetime
+
+
+def format_datetime(dt: datetime, fmt: str = "%Y-%m-%d %H:%M:%S") -> str:
+    """格式化日期时间"""
+    return dt.strftime(fmt)
+
+
+def safe_json_loads(json_str: str, default: Any = None) -> Any:
+    """安全的JSON解析"""
+    try:
+        return json.loads(json_str)
+    except (json.JSONDecodeError, TypeError):
+        return default
+
+
+def dict_filter_none(data: Dict[str, Any]) -> Dict[str, Any]:
+    """过滤字典中的None值"""
+    return {k: v for k, v in data.items() if v is not None}