[Python.NET] How to turn on console window from Windows System while debugging Embedded PythonNet app?

[Seungweon Park]

WOW. Now I got it. Thank you much for the kind explanation. Now it works as
charm in Console Application in Windows system.
In the meantime, if it is not console window application, how I can
see/capture the text output? (I know it will work but want to capture the
output)

Any idea?


On Thu, Apr 4, 2013 at 6:38 PM, brad at fie.us <brad at fie.us> wrote:

> It's an escape character issue.
>
> Since you are pasting source code in your source code, you need to double
> escape.  Probably as follows:
>
> PythonEngine.RunSimpleString("execfile('c:\\\\temp\\\\a.py')");
>
> the c# parser turns that into:  execfile('c:\\temp\\a.py')
>
> And then python runs those escape characters and gets:  c:\temp\a.py
>
> If you don't double escape, C# sends: execfile('c:\temp\a.py')
>
> And therefore the escape characters \t and \a are executed, resulting in
> that weird value you got.
>
>
> On Apr 4, 2013, at 5:45 PM, Seungweon Park <swpark71 at gmail.com> wrote:
>
> I retested with same code as you have and added online to execute a.py. It
> looks it running but not the last line
>
>         po = PythonEngine.RunString("execfile('c:\\temp\\a.py')");
>
>
> <image.png>
>
>
>
> So I changed to
>
>      PythonEngine.RunSimpleString("execfile('c:\\temp\\a.py')");
>
> then, I got
>
> <image.png>
>
> Hello World!
> <module 'ntpath' from 'C:\Python27\Lib\ntpath.pyc'>
> my\path
> other\path
> 5
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
> IOError: [Errno 2] No such file or directory: 'c:\temp\x07.py'
>
> I don't know why it converted to 'c:\temp\x07.py' from 'c:\temp\a.py', and
> got the error. Any idea?
>
>
>
>
> On Thu, Apr 4, 2013 at 2:25 PM, Seungweon Park <swpark71 at gmail.com> wrote:
>
>> As you see the screenshot, I ran same application like you, but it
>> doesn't have any output which a.py's supposed to print 'aa' in the screen
>> after "Hello World!".
>>
>>
>> <image.png>
>>
>>
>> On Thu, Apr 4, 2013 at 1:51 PM, brad at fie.us <brad at fie.us> wrote:
>>
>>> What happens when you run a compiled application like mine, that has
>>> both c# and python console output, directly from within the windows command
>>> line cmd.exe?  Do you see the WriteLine() results from C# but not PythonNet?
>>>
>>> That will tell you if it's an execution environment issue or an actual
>>> programming issue.  Which is still in question I think.
>>>
>>> -brad
>>>
>>> On Apr 4, 2013, at 4:40 PM, Seungweon Park <swpark71 at gmail.com> wrote:
>>>
>>> Image file is not attached. Here it goes.
>>>
>>>
>>> On Thu, Apr 4, 2013 at 1:37 PM, Seungweon Park <swpark71 at gmail.com>wrote:
>>>
>>>> Hi,
>>>>
>>>> Actually, my questions are
>>>>
>>>>             1. How to turn on console window(live) from Windows System
>>>> while debugging Embedded PythonNet app?
>>>>             2. How to capture python script execution output from C#
>>>> code?
>>>>
>>>> I've been talking to Brad at fie.us about my issue which I can't get the
>>>> output result of any python command using PythonEngine.RunString() or
>>>> PythonEngine.RunSimpleString().
>>>> I've been tried to debug simple code with Python.Runtime project, but
>>>> can't find how to turn on this console window, nor capture the python
>>>> script execution output.
>>>>
>>>> What I'm trying to do is that I don't want to modify any python script
>>>> when running a python script from C# code, so I have below code:
>>>>
>>>>
>>>> using System;
>>>> using System.Collections.Generic;
>>>>  using System.Linq;
>>>>  using System.Text;
>>>> using System.Threading.Tasks;
>>>> using Python.Runtime;
>>>>  using System.Diagnostics;
>>>>
>>>> namespace npythontest
>>>> {
>>>>  public class Program
>>>> {
>>>> static void Main(string[] args)
>>>>  {
>>>> PyObject po;
>>>>
>>>> PythonEngine.Initialize();
>>>>
>>>> IntPtr pythonLock = PythonEngine.AcquireLock();
>>>> po = PythonEngine.RunString("execfile('c:\\cvs\\brocade.py')");
>>>>  PythonEngine.ReleaseLock(pythonLock);
>>>>
>>>> PythonEngine.Shutdown();
>>>> }
>>>>  }
>>>> }
>>>>
>>>> and a.py prints out many string output. I want to capture this output
>>>>  by RunString()/RunSimpleString() method, but it doesn't return any result
>>>> except 'null'. It seems it isn't for getting output.
>>>>
>>>> Then, while talking to Brad, his screenshot from his Mac OS with Mono
>>>> displays the execution result output on an window like below, so wonder if
>>>> windows environment can have same console window.
>>>> Previously, Oleksii and Sharon mentioned in the thread
>>>> http://mail.python.org/pipermail/pythondotnet/2011-March/001103.html,
>>>> but don't know it's already implemented or not. However, I can't find how
>>>> to have same environment from my window system like Brad's Mac has.
>>>>
>>>> So would you help me how to capture the python script output or have
>>>> console window for debugging when I'm using embedded PythonNet?
>>>>
>>>> Thank you,
>>>> Spark.
>>>>
>>>> <Screen Shot 2013-04-01 at 6.22.50 PM.png>
>>>>
>>>>
>>> <mono_screenshot_pythonnet.png>
>>>
>>>
>>>
>>
>
>
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