[Swig-devel] [ swig-Bugs-3597554 ] Problem with same module names in different packages

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Bugs item #3597554, was opened at 2012-12-19 13:25
Message generated for change (Settings changed) made by ptomulik
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Category: python
Group: None
Status: Open
Resolution: None
>Priority: 4
Private: No
Submitted By: Paweł Tomulik (ptomulik)
>Assigned to: William Fulton (wsfulton)
Summary: Problem with same module names in different packages

Initial Comment:
Hi,

I have following minimal example:

P1
P1/Foo_Mod.i
P1/__init__.py
P2
P2/Foo_Mod.i
P2/__init__.py

with python modules P1.Foo_Mod and P2.Foo_Mod.
For such cases, the generated python code  is often
incorrect and it's impoossible to import generated modules.
One of such cases is, if we define:

struct Foo1 {}

in P1.Foo_Mod and do something like

%import <P1/Foo_Mod.i>
struct Foo2 : public Foo1 {}

in P2/Foo_Mod.i.

For such code, the modules get generated but import of P2.Foo_Mod yields:

>>> import P2.Foo_Mod
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "P2/Foo_Mod.py", line 71, in <module>
    class P2Foo2(P1Foo1):
NameError: name 'P1Foo1' is not defined

This is, because the generated proxy(?) python module P2.Foo_Mod contains something like:

# P2.Foo_Mod
...
import P1.Foo_Mod
class P2Foo2(P1Foo1):
...

but it should have:

# P2.Foo_Mod
...
import P1.Foo_Mod
class P2Foo2(P1.Foo_Mod.P1Foo1):
...

I attach a simple example that allows to replicate the bug and patch for your consideration.
The patch was created in hurry, so I don't know if it doesn't break other things in swig.

Regards!


----------------------------------------------------------------------

Comment By: Paweł Tomulik (ptomulik)
Date: 2012-12-19 13:41

Message:
struct P1Foo1{}; and struct P2Foo2 : public P1Foo1 {};

----------------------------------------------------------------------

Comment By: Paweł Tomulik (ptomulik)
Date: 2012-12-19 13:40

Message:
Sorry, should be struct P1Foo2{}; and struct P2Foo2 : public P1Foo1 {}; in
the description above.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=101645&aid=3597554&group_id=1645