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str() failure when C# ToString() return unicode character #666

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Description

@EcmaXp

Environment

  • Pythonnet version: 2.4.0.dev0 (master; #19d854c)
  • Python version: 3.6.3 (v3.6.3:2c5fed8, Oct 3 2017, 18:11:49) [MSC v.1900 64 bit (AMD64)]
  • Operating System: Windows 10 Pro 64 Bit (1803; 17134.5)

Details

  • Describe what you were trying to get done.
  1. Just call str python built-in function with C# class
  2. Raise UnicodeDecodeError if value is 안녕
  3. Return 안녕PADD if value is `안녕PADDINGX"

It seems like failure str convert with ToString() function only.
(Another method, nor read value does not problem)

namespace Hello
{
    public class World
    {
        public string value = "안녕";

        public string GetString()
        {
            return value;
        }

        public override string ToString()
        {
            return value;
        }
    }
}
import clr
clr.AddReference("hello")
from Hello import World
world = World()
print(1, str(world.value))
print(2, str(world.GetString()))
print(3, str(world))
  • If there was a crash, please include the traceback here.
1 안녕
2 안녕
Traceback (most recent call last):
  File "main.py", line 7, in <module>
    str(hello)
UnicodeDecodeError: 'utf-8' codec can't decode bytes in position 0-1: unexpected end of data

Activity

  1. yagweb commented on May 8, 2018

    @yagweb
    Contributor

    It's a bug of the PyString_FromString method in runtime.cs, refer to #662

  2. EcmaXp commented on May 10, 2018

    @EcmaXp
    Author

    https://github.com/EcmaXp/execlib/blob/master/gen_lib/PyExcelLibrary/Excel.cs#L14-L33

    Because, PyString_FromStringAndSize python c api accept the bytes length, not string length.

  3. den-run-ai commented on May 10, 2018

    @den-run-ai
    Contributor

    @EcmaXp pull requests are welcome!

  4. EcmaXp commented on May 10, 2018

    @EcmaXp
    Author

    @denfromufa I can't build this repo, how can i build?

  5. den-run-ai commented on May 10, 2018

    @den-run-ai
    Contributor

    @EcmaXp have a look at wiki about building pythonnet and @yagweb pull request, feel free to add a unit test for it:

    https://github.com/pythonnet/pythonnet/wiki
    #670

  6. filmor commented on Aug 29, 2018

    @filmor
    Member

    The fix for this has been merged to master, so I'll close this. Feel free to reopen if the version in the master branch doesn't solve the issue.

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