add a doctest for Tree

2018-02-02 18:33:08 +03:00 · 2018-02-02 18:33:08 +03:00 · 5123dc0f8a
commit 5123dc0f8a
parent 451dce91e5
1 changed files with 8 additions and 0 deletions
--- a/mapytex/calculus/core/tree.py
+++ b/mapytex/calculus/core/tree.py
@ -76,6 +76,14 @@ class Tree(object):
         | > 2
         | > 3
         > 4
+        >>> t = Tree.from_str("2+3*n")
+        >>> print(t)
+        +
+         > 2
+         > *
+         | > 3
+         | > n
+
        """
        t = MutableTree.from_str(expression)
        return cls.from_any_tree(t)