Python: CG trace: Don't abuse example dir

python/tools/recorded-call-graph-metrics/tests/python-src/problem-2.py

@@ -0,0 +1,25 @@
+def func(func_arg):
+    print("func")
+
+    def func2():
+        print("func2")
+        return func_arg()
+
+    func2()
+
+
+def nop():
+    print("nop")
+    pass
+
+
+func(nop)
+
+
+"""
+Needs handling of LOAD_DEREF. Disassembled bytecode looks like:
+
+  6           8 LOAD_DEREF               0 (func_arg)
+             10 CALL_FUNCTION            0
+             12 RETURN_VALUE
+"""