Yes, you can set the PYTHONHOME variable from .net prior to calling the initialize. Many of the python runtimes set registry keys or are located in default locations.
mike On 6/6/07, Barrett, Joey <[EMAIL PROTECTED]> wrote: > > 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/000037.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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