diff --git a/python-client/wmill/wmill/AppPreview.23783724.js b/python-client/wmill/wmill/AppPreview.23783724.js
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diff --git a/python-client/wmill/wmill/AppPreview.23783724.js.1 b/python-client/wmill/wmill/AppPreview.23783724.js.1
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diff --git a/python-client/wmill/wmill/flow.py b/python-client/wmill/wmill/flow.py
index 53c23a9e4c..c63e9f5237 100644
--- a/python-client/wmill/wmill/flow.py
+++ b/python-client/wmill/wmill/flow.py
@@ -1,6 +1,7 @@
 import functools
 import ast
 import inspect
+import yaml
 from graphlib import TopologicalSorter
 
 def flow(f):
@@ -15,19 +16,20 @@ class Edge(object):
     def __init__(self, _node, _path):
         self._node = _node
         self._path = _path
-        print("DECL EDGE: node: " + str(self._node) + " path: " + str(self._path))
+        # print("DECL EDGE: node: " + str(self._node) + " path: " + str(self._path))
 
     def __getattr__(self, attr):
-       return  super(self._node, self._path + [attr])
+       return Edge(self._node, self._path + [attr])
 
     def __str__(self):
         return f"EDGE: {self._node}({self._path})"
 
 class Node(object):
-    def __init__(self, _id, _deps):
+    def __init__(self, _id, _deps, _f):
         self._id = _id
         self._deps = _deps
-        print("DECL NODE: id: " + str(self._id) + ", deps: " + str([f"{k}={v.__str__()}" for k, v in self._deps.items()]))
+        self._f = _f
+        # print("DECL NODE: id: " + str(self._id) + ", deps: " + str([f"{k}={v.__str__()}" for k, v in self._deps.items()]))
 
 
     def __getattr__(self, attr):
@@ -38,7 +40,7 @@ class Node(object):
         return f"{self._id}({k_v})"
 
 def step(f):
-    print("DECL F: " + f.__name__)
+    # print("DECL F: " + f.__name__)
     # code = inspect.getsource(f)
     # print(code)
     # print(ast.dump(ast.parse(code)))
@@ -49,10 +51,14 @@ def step(f):
         for k, v in kwargs.items():
             if isinstance(v, Node):
                 kwargs[k] = Edge(v, [])
-        return Node(f.__name__, kwargs)
+        return Node(f.__name__, kwargs, f)
 
     return wrapper
 
+@step
+def d():
+    return 32
+
 @step
 def a(a):
     import pandas
@@ -68,26 +74,65 @@ def c(x, y):
     return x + y + 1
 
 def flow():
-    r_a = a(1)
+    r_a = a(d())
     r_b = b(2)
     r_c = c(r_a, r_b)
     return r_c
 
-def get_edges(graph):
+def get_edges_and_nodes(graph):
     edges = {}
     nodes = [graph]
+    all_nodes = []
     seen = set()
-    for k, v in graph._deps.items():
-        if isinstance(v, Edge):
-            edges.append((v._node._id, v._id))
-            nodes.append(v._node)
-    return edges
+    while nodes:
+        node = nodes.pop()
+        id = node._id
+        if id in seen:
+            continue
+        all_nodes.append(node)
+        seen.add(id)
+        for _, v in node._deps.items():
+            if isinstance(v, Edge):
+                if id not in edges:
+                    edges[id] = []
+                edges[id].append(v._node._id)
+                nodes.append(v._node)
+    return edges, {n._id: n for n in all_nodes}
 
 def render(graph):
-    print(graph)
-    edges = get_edges(graph)
+    edges, all_nodes = get_edges_and_nodes(graph)
+    # print(edges)
+    # print(all_nodes)
     ts = TopologicalSorter(edges)
-    o = tuple(ts.static_order())
-    print(o)
+    sortd = tuple(ts.static_order())
+    modules_f = [[id, all_nodes[id]] for id in sortd]
+    files = [ n._f for n in all_nodes.values()]
+    sources = gen_sources(files)
+    print(sources)
+    modules = [{"id": k, "lang": "python", "content": render_f(v._f)} for k, v in modules_f]
+    return yaml.dump(modules)
 
-render(flow())
\ No newline at end of file
+def gen_module_sources(source):
+    pass
+
+def gen_sources(files):
+    files = set(files)
+    asts = []
+    sources = {}
+    for f in files:
+        asts.append(ast.parse(inspect.getsource(f)))
+        
+    for astf in asts:
+        for node in astf.body:
+            if isinstance(node, ast.FunctionDef):
+                print(node.args)
+                code =  ast.unparse(node.body)
+                sources[node.name] = code
+
+    return sources
+
+def render_f(f):
+    code = inspect.getsource(f)
+    return ast.unparse(ast.parse(code))
+
+rendered = render(flow())