Create note package

smnp/ast/node/model.py

@@ -0,0 +1,41 @@
+from smnp.note.model import Note
+
+class Node:
+    def __init__(self, parent, pos):
+        self.children = []
+        self.parent = parent
+        self.pos = pos
+        for child in self.children:
+            child.parent = self
+
+    def __repr__(self):
+        return self.__str__()
+
+    def __len__(self):
+        return len(self.children)
+
+    def __getitem__(self, index):
+        return self.children[index]
+
+    def append(self, node):
+        node.parent = self
+        self.children.append(node)
+
+    def pop(self, index):
+        return self.children.pop(index)
+
+    def _print(self, level):
+        string = f"{pad(level)}{self.__class__.__name__}({self.parent.__class__.__name__}):\n"
+        for child in self.children:
+            if isinstance(child, str) or isinstance(child, int) or isinstance(child, Note):
+                string += pad(level + 1) + f"'{child}'\n"
+            else:
+                string += child._print(level + 1)
+        return string
+
+    def __str__(self):
+        return self._print(0)
+
+
+def pad(level):
+    return ("   " * level)