Implement more nodes in the ast. Add script to walk over AST of sourcecode.

crawl_sourcecode.py

@@ -0,0 +1,33 @@
+
+import ast
+import sys
+
+filename = sys.argv[1]
+print('Crawling file:', filename)
+
+
+with open(filename, 'r') as f:
+    source = f.read()
+
+t = ast.parse(source)
+print(t)
+
+shift = 3
+def print_node(node, indent=0):
+    if isinstance(node, ast.AST):
+        print(' '*indent, "NODE", node.__class__.__name__)
+        for field in node._fields:
+            print(' '*indent,'-', field)
+            f = getattr(node, field)
+            if isinstance(f, list):
+                for f2 in f:
+                    print_node(f2, indent=indent+shift)
+            else:
+                print_node(f, indent=indent+shift)
+    else:
+        print(' '*indent, 'OBJ', node)
+
+print_node(t)
+
+# print(ast.dump(t))
+