Add str, repr and IPython's pretty repr, close #7

madeleine/base.py

@@ -60,6 +60,31 @@ class Component(metaclass=ComponentMetaclass, register=False):
         Useful to perform some checks after parsing.
         """
 
+    def __str__(self):
+        return str(self.serialize())
+
+    def __repr__(self):
+        return '{}({})'.format(
+            self.__class__.__name__,
+            ', '.join(
+                '{}={!r}'.format(k, v)
+                for k, v in self.serialize().items()
+            ),
+        )
+
+    def _repr_pretty_(self, p, cycle):
+        if cycle:
+            p.text('{}(...)'.format(self.__class__.__name__))
+        else:
+            with p.group(2, '{}('.format(self.__class__.__name__), ')'):
+                p.breakable('')
+                for k, v in self.serialize().items():
+                    p.text(k)
+                    p.text('=')
+                    p.pretty(v)
+                    p.text(',')
+                    p.breakable()
+
     @classmethod
     def from_path(cls, path, fmt=FileFormat.YAML):
         assert isinstance(fmt, FileFormat)