[Mono-list] IronPython source file must be present to run on Linux

Ben Rousch brousch at gmail.com
Mon Apr 26 22:30:01 EDT 2010

On Mon, Apr 26, 2010 at 7:33 PM, Dino Viehland <dinov at microsoft.com> wrote:
> Ben wrote:
>> I have a simple IronPython 2.6 Hello World console program created and
>> compiled with SharpDevelop on Windows. You can download the program
>> here: http://dl.dropbox.com/u/101667/HelloWorld.zip
>> When I run the HelloWorld executable on Windows, it works correctly.
>> When I run the same thing on Linux, it fails and says it can't find
>> the HelloWorld module. If I put the HelloWorld.py script from which
>> the executable was compiled into the directory with the executable,
>> the script runs fine on Linux.
>> I think SharpDevelop uses the standard pyc.exe to compile IronPython,
>> but just in case I compiled it myself and got the same results.
>> I also tried running the program under Mono 2.4 on Windows and it ran
>> correctly without HelloWorld.py
>> I can work around this problem by including the Python source, but I
>> don't think that is the correct behavior.
>> OS: Ubuntu 9.10
>> Mono Version: Mono JIT compiler version 2.4.4 (Debian
>> 2.4.4~svn151842-1gezakovacs~karmic1)
>> Full error message when HelloWorld.py is not present:
>> Unhandled Exception: IronPython.Runtime.Exceptions.ImportException: No
>> module named HelloWorld
>>   at IronPython.Modules.Builtin.__import__
>> (IronPython.Runtime.CodeContext context, System.String name,
>> System.Object globals, System.Object locals, System.Object fromlist,
>> Int32 level) [0x00000]
>>   at (wrapper managed-to-native)
>> System.Reflection.MonoMethod:InternalInvoke
>> (object,object[],System.Exception&)
>>   at System.Reflection.MonoMethod.Invoke (System.Object obj,
>> BindingFlags invokeAttr, System.Reflection.Binder binder,
>> System.Object[] parameters, System.Globalization.CultureInfo culture)
>> [0x00000]
> Does this work if you compile on Linux and run on Linux?

You get around sir! I have not been able to try a version compiled on
Linux because of problems compiling IronPython scripts on Linux. A
certain Dino Viehland on the IronPython list assures me this bug is
fixed in newer versions of Mono, so I will give it a try as soon as I
can upgrade.

> I think the issue here is that we're compiling in the path separator on
> Windows and then using the Linux path separator to extract out the
> module name.  We should probably always use forward slashes both when
> writing out the module name and reading it back in.  I think that shouldn't
> give us any problems.

  Ben Rousch
  brousch at gmail.com

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