Feat: Expression can be generated randomly!!!

mapytex/calculus/core/random/leaf.py

@@ -31,6 +31,7 @@ def look_for_rdleaf(target):
     except TypeError:
         target_ = target
 
+    stacking = False
     try:
         while True:
             tok = yield

mapytex/calculus/core/tree.py

@@ -11,7 +11,7 @@ Tree class
 
 from .tree_tools import to_nested_parenthesis, postfix_concatenate, show_tree
 from .coroutine import coroutine, STOOOP
-from .str2 import str2
+from .str2 import str2, rdstr2
 from .operator import OPERATORS, is_operator
 
 __all__ = ["Tree", "MutableTree"]
@@ -51,7 +51,7 @@ class Tree:
         self.right_value = right_value
 
     @classmethod
-    def from_str(cls, expression, convert_to_mo=True):
+    def from_str(cls, expression, convert_to_mo=True, random=False):
         """ Initiate a tree from an string expression
 
         :example:
@@ -77,9 +77,17 @@ class Tree:
          > *
          | > 3
          | > n
+        >>> t = Tree.from_str("2+{n}*x", random=True)
+        >>> print(t)
+        +
+         > 2
+         > *
+         | > {n}
+         | > x
+
 
         """
-        t = MutableTree.from_str(expression, convert_to_mo)
+        t = MutableTree.from_str(expression, convert_to_mo, random)
         return cls.from_any_tree(t)
 
     @classmethod
@@ -890,7 +898,7 @@ class MutableTree(Tree):
         self.right_value = right_value
 
     @classmethod
-    def from_str(cls, expression, convert_to_mo=True):
+    def from_str(cls, expression, convert_to_mo=True, random=False):
         """ Initiate the MutableTree
 
         :example:
@@ -948,8 +956,12 @@ class MutableTree(Tree):
          | > x
 
         """
-        str_2_mut_tree = str2(cls.sink, convert_to_mo)
-        return str_2_mut_tree(expression)
+        if random:
+            str_2_mut_tree = rdstr2(cls.sink)
+            return str_2_mut_tree(expression)
+        else:
+            str_2_mut_tree = str2(cls.sink, convert_to_mo)
+            return str_2_mut_tree(expression)
 
     @classmethod
     @coroutine