将 Python 列表转换为 .NET IEnumerable？

Question

I'm attempting to call a C# function from a Python script, via the clr module from the PythonNet library.

One of the arguments that this C# function takes is of the type System.Collections.Generic.IEnumerable . Simply supplying a list of the required data types to the first argument results in a 'list' value cannot be converted to 'System.Collections.Generic.IEnumerable' error.

After searching online, the supposed .NET datatypes should already be included in the Python installation, and I should be able to access them. However, I'm unsure as to how.

Doing:

from System.Collections.Generic import *

Fails because the module isn't found, while doing:

import collections

Doesn't have a namespace IEnumerable .

How would I go about converting a Python list to the System.Collections.Generic.IEnumerable data type?

Thanks for reading my post, any guidance is appreciated.

Answer 1

Before importing anything from C#/.NET you have to import clr from pytho.net package.

Answer 2

After messing around in the Python script for a few hours, I managed to figure out a solution:

First, the actual C# Collections namespace has to be imported via the clr module as such:

clr.AddReference("System.Collections")

Then, the specific data type of the Collections namespace has to be imported:

from System.Collections.Generic import IEnumerable

And then one should be able to use the respective data type, and call all the class functions it has. In my case, I wanted to convert a Python List into the IEnumerable datatype. Therefore, I could iterate over my Python List , and call the Add function of the IEnumerable class (using datatype of int as an example):

myList = [1, 2, 3]
myIEnumerable = IEnumerable[int]()

for i in range(len(myList)):
   myIEnumerable.Add(myList[i])

As a sidenote, while the C# function that I wanted to call from my Python script has one of its arguments listed as accepting a type of System.Collections.Generic.IEnumerable , I managed to get it to work with having a System.Collections.Generic.List type instead. Perhaps it'll be useful for someone else.