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Sypport typeof(T) or clr.GetClrType #432
Description
In order to do reflection, you need to acquire the Type instance for imported class.
In C#, this is done by
Type t = typeof(MyClass)
In IronPython, this is done by
t = clr.GetClrType(MyClass)
Python.net seems to be missing this functionality.
I currently have this horrible hack, and I'm unsure how far it will work:
def get_clr_type(typ):
""" simulate typeof(T) or GetClrType from IronPython.
Horrible hack, redo
"""
name = typ.__module__ + "." + typ.__name__
return Type.GetType(name)For reference, code using this resides in: https://github.com/vivainio/pynetext/blob/master/pynetext.py
Activity
den-run-ai commented on Mar 22, 2017
@vivainio pull requests are welcome!
Your approach is in the right direction:
https://mail.python.org/pipermail/pythondotnet/2005-July/000371.html
vivainio commented on Mar 22, 2017
@denfromufa Ok, I'll take a look if I can figure it out how to build & work with the codebase :)
den-run-ai commented on Mar 22, 2017
@vivainio pythonnet runs on 2 CI servers: Travis and Appveyor. So the pull request will automatically do the builds and also run the tests.
You can also look at these docs to see how to build locally:
https://github.com/pythonnet/pythonnet/wiki/Troubleshooting-on-Windows-and-Linux
Please report any issues back about building locally, so that we can improve the wiki.
Support clr.GetClrType() - as in IronPython
Support clr.GetClrType() - as in IronPython (#433)
den-run-ai commented on Mar 26, 2017
@vivainio thanks for this contribution!
Support clr.GetClrType() - as in IronPython (pythonnet#433)
Rebase with master (#2)
KEBO80 commented on Nov 7, 2017
As an anlternative solution, I came up with the following by creating a static C# helper function:
public static class ReflectionHelper { public static Type GetType<T>() => typeof(T); }This I can import this in Python code and use it for any NET type in the folllowing way:
intt32type is of System.RuntimeType.
JoaBjo commented on Dec 14, 2017
Could you elaborate a little bit on your alternative solution @KEBO80? That class doesn't compile since T is not defined.
filmor commented on Dec 15, 2017
@JoaBjo Did you try to compile it? :)
This code is valid, the function GetType<T>() is a generic function using one type parameter T and no function parameters. In C# you would call it as var int32Type = ReflectionHelper.GetType<System.Int32>(), KEBO80 gave the corresponding Python syntax (square brackets [] instead of <> to select the type parameter).
JoaBjo commented on Dec 15, 2017
Thanks for the reply @filmor. I was confused for a couple of reasons.
Also for my use case I need the method for a static class. And GetType() doesn't compile for static types in C#. However, for some reason it still works in python when writing GetTypeT for a static type T. I did not expect that.
Anyways, thanks for clarifying things
den-run-ai commented on Jan 28, 2018
Here is one corner case that was fixed, but needs review:
#606
Basically I scanned through all built-in types in System.