PyObject has a GetItem method that takes a string or an int to access the elements in a dictionary or a list. You can use GetAttr to get the attributes of a PyObject. Check out the PyObject class in the class browser to see the rest of the functionality. I think that you can set the PYTHONPATH through .net using system.environment or through PYTHON using sys.path.
> -----Original Message----- > From: Barrett, Joey [mailto:[EMAIL PROTECTED] > Sent: Wednesday, June 06, 2007 12:22 PM > To: Karpenstein, Nissim (C-BASS); pythondotnet@python.org > Subject: RE: [Python.NET] Could you tell me how to call > python from c#? > > > Thank you for your response, this is helpful. > > The methods called usually return lists or dictionaries and > sometimes other types too that need to be used within the C#. > In the example you provided the return value from > InvokeMethod(), is a string "fromPython", but I noticed > InvokeMethod() actually returns a PyObject. > > How can I look at that PyObject and extract the returned values? > > The classes I use import many modules from a number of > locations on disk that aren't known to the interpreter. > > Is there a way to add to the PYTHONPATH programmatically in > C# using the Python for .net library, or would it be required > to write a wrapper python module that adds to the path first? > Maybe there is another way to handle this? > > Thank you again > > Joey J. Barrett > Investment Technology Group, Inc. > > -----Original Message----- > From: Karpenstein, Nissim (C-BASS) > [mailto:[EMAIL PROTECTED] > Sent: Wednesday, June 06, 2007 6:37 AM > To: Barrett, Joey; pythondotnet@python.org > Subject: RE: [Python.NET] Could you tell me how to call > python from c#? > > I tried to post this to the list yesterday but it bounced > because of address issues...hopefully this will work: > > If you want to execute a python program from c-sharp you can > just use System.Diagnostics.Process to execute python.exe and > you don't need python for .net. > > Python for .net is more appropriate for if you want to > execute a python function or create an instance of a python > object and then run methods and access attributes from your > C# program. > > The example you linked to is OK, except that he modified the > Python.Runtime.Dll which is not necessary. > > If you had a Hello.py with a function called hello Like this: > > def hello(): > return 'hello' > > > You could do this in C#: > > PythonEngine.Initialize(); > PyObject helloModule = PythonEngine.ImportModule("Hello"); > String fromPython = helloModule.InvokeMethod("hello", new > PyTuple()).ToString(); PythonEngine.Shutdown(); > > // now fromPython = "hello" > > If your function takes an argument: > > def returnArg(arg): > return arg > > PythonEngine.Initialize(); > PyObject helloModule = PythonEngine.ImportModule("Hello"); > String fromPython = helloModule.InvokeMethod("returnArg", new > PyObject[1] {new PyString("Test")}).ToString(); > PythonEngine.Shutdown(); > > // now fromPython = "test" > > ________________________________ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Barrett, Joey > Sent: Tuesday, June 05, 2007 8:11 PM > To: pythondotnet@python.org > Subject: Re: [Python.NET] Could you tell me how to call > python from c#? > > > > Hi, > > > > I also would be very interested in seeing some examples > to "call python from c#" using "Python for .NET". I have dug > around Google and a number of forums---I can't find anything > except the post from below. I really hope I'm not missing > the obvious somewhere. > > > > IronPython is great but my needs require using a few > c++ extensions compiled for CPython (that can't be recompiled). > > > > Also thanks in advance, > > > > Joey J. Barrett > > Investment Technology Group, Inc. > > > > > > > > > > Hello, PythonNet! > > > I'm looking for some sample code to call python from C#. > Actually, I'd like to execute python program(let say > 'Hello.py') from C# > with parameters. > Actually, I'm a newbie at both of languages. So, could > you give sample > source code? I was looking for some guide or source for > several days, > but I couldn't find it. What I've got so far from googling is > > http://mail.python.org/pipermail/pythondotnet/2003-November/00 > 0037.html, > > but I can't understand it and old one. > > Thank you in advance. > Seungweon. > > > > > > > -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > -+-+-+-+-+ > -+- > This message is for the named person's use only. This > communication is for > informational purposes only and has been obtained from > sources believed to > be reliable, but it is not necessarily complete and its > accuracy cannot be > guaranteed. It is not intended as an offer or > solicitation for the purchase > or sale of any financial instrument or as an official > confirmation of any > transaction. Moreover, this material should not be > construed to contain any > recommendation regarding, or opinion concerning, any security. > It may > contain confidential, proprietary or legally privileged > information. No > confidentiality or privilege is waived or lost by any > mistransmission. 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