Merge pull request #108 from afh/pull/python_xact_code

Fix crash when accessing the transaction code via post.xact.code using python

src/py_xact.cc

@@ -119,8 +119,8 @@ void export_xact()
     .def("__str__", py_xact_to_string)
 
     .add_property("code",
-                  make_getter(&xact_t::code),
-                  make_setter(&xact_t::code))
+                  make_getter(&xact_t::code, return_value_policy<return_by_value>()),
+                  make_setter(&xact_t::code, return_value_policy<return_by_value>()))
     .add_property("payee",
                   make_getter(&xact_t::payee),
                   make_setter(&xact_t::payee))
@@ -157,6 +157,8 @@ void export_xact()
                   make_getter(&period_xact_t::period_string),
                   make_setter(&period_xact_t::period_string))
     ;
+
+  register_optional_to_python<std::string>();
 }
 
 } // namespace ledger

test/regress/xact_code.dat

@@ -0,0 +1,3 @@
+2012-11-10 (C0-d3) Payee
+  Assets:Checking                 € -12,45
+  Expenses:Expenditure

test/regress/xact_code.py

@@ -0,0 +1,4 @@
+import ledger
+
+for post in ledger.read_journal('test/regress/xact_code.dat').query('expenses'):
+  print post.xact.code

test/regress/xact_code_py.test

@@ -0,0 +1,3 @@
+test python test/regress/xact_code.py
+C0-d3
+end test