Doc: Doctest for Tree generator

mapytex/calculus/core/random/__init__.py

@@ -38,16 +38,33 @@ Tree with RdLeaf replaced by generated values
 :example:
 
 >>> from ..tree import Tree
->>> rd_t = Tree("+", RdLeaf("a"), RdLeaf("a*k"))
+>>> rd_t = Tree("/", RdLeaf("a"), RdLeaf("a*k"))
 >>> print(rd_t)
-+
+/
  > {a}
  > {a*k}
->>> extract_rdleaf(rd_t)
+>>> leafs = extract_rdleaf(rd_t)
+>>> leafs
 ['a', 'a*k']
+>>> rd_varia = extract_rv(leafs)
+>>> rd_varia # doctest: +SKIP
+{'a', 'k'}
+>>> generated = random_generator(rd_varia, conditions=['a%2+1'])
+>>> generated # doctest: +SKIP
+{'a': 7, 'k': 4}
+>>> computed = compute_leafs(leafs, generated)
+>>> computed # doctest: +SKIP
+{'a': 7, 'a*k': 28}
+>>> replaced = replace_rdleaf(rd_t, computed)
+>>> print(replaced) # doctest: +SKIP
+/
+ > 7
+ > 28
+
 """
 
 from random import choice
+from functools import reduce
 from .leaf import RdLeaf
 
 
@@ -129,11 +146,10 @@ def replace_rdleaf(tree, computed_leafs):
 
     return tree.map_on_leaf(replace)
 
-def random_generator(rd_variables,
-                     conditions = [],
-                     rejected = [0],
-                     min_max = (-10, 10),
-                     variables_scope = {}):
+
+def random_generator(
+    rd_variables, conditions=[], rejected=[0], min_max=(-10, 10), variables_scope={}
+):
     """ Generate random variables
 
     :param rd_variables: list of random variables to generate
@@ -165,13 +181,23 @@ def random_generator(rd_variables,
     >>> gene["a"] % gene["b"]
     0
     """
-    complete_scope = build_variable_scope(rd_variables,
-                                          rejected, min_max,
-                                          variables_scope)
-    choices_list = {v: list(set(range(
-        complete_scope[v]["min_max"][0], complete_scope[v]["min_max"][1]+1)
-                            ).difference(complete_scope[v]["rejected"]))
-                    for v in rd_variables}
+    complete_scope = build_variable_scope(
+        rd_variables, rejected, min_max, variables_scope
+    )
+    choices_list = {
+        v: list(
+            set(
+                range(
+                    complete_scope[v]["min_max"][0], complete_scope[v]["min_max"][1] + 1
+                )
+            ).difference(complete_scope[v]["rejected"])
+        )
+        for v in rd_variables
+    }
+
+    # quantity_choices = reduce(lambda x,y : x*y,
+    #                           [len(choices_list[v]) for v in choices_list])
+    # TODO: améliorer la méthode de rejet avec un cache |dim. mai 12 17:04:11 CEST 2019
 
     generate_variable = {v: choice(choices_list[v]) for v in rd_variables}
 
@@ -180,6 +206,7 @@ def random_generator(rd_variables,
 
     return generate_variable
 
+
 def build_variable_scope(rd_variables, rejected, min_max, variables_scope):
     """ Build variables scope from incomplete one