add __repr__ and __str__ methods to Parameter (#1714)

* add __repr__ and __str__ methods to Parameter

---------

Co-authored-by: Ray Bell <[email protected]>

Author: raybellwaves

metaflow/parameters.py

@@ -273,7 +273,7 @@ def __init__(
         help: Optional[str] = None,
         required: bool = False,
         show_default: bool = True,
-        **kwargs: Dict[str, Any]
+        **kwargs: Dict[str, Any],
     ):
         self.name = name
         self.kwargs = kwargs
@@ -331,6 +331,12 @@ def __init__(
                 "for string parameters." % name
             )
 
+    def __repr__(self):
+        return "metaflow.Parameter(name=%s, kwargs=%s)" % (name, kwargs)
+
+    def __str__(self):
+        return "metaflow.Parameter(name=%s, kwargs=%s)" % (name, kwargs)
+
     def option_kwargs(self, deploy_mode):
         kwargs = self.kwargs
         if isinstance(kwargs.get("default"), DeployTimeField) and not deploy_mode: