Environment

• Pythonnet version: 2.3
• Python version: 3.5
• Operating System: Windows 10

Details

Hi!
I just install pythonnet via nuget on a .Net project. To test it, I included the example code that appears on the readme.md of pythonnet in the c# project but when the next line is executed
dynamic b = np.array(new List<float> { 6, 5, 4 }, dtype: np.int32);

the following exception occurred:

Python.Runtime.PythonException: 'TypeError : int() argument must be a string, a bytes-like object or a number, not '0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]

Any idea of the issue? The prior lines were executed correctly.

I tried to install Pythonnet from Master as suggested in #554 but an error happend at the first command.
python setup.py bdist_wheel --xplat
I attach the output, I have translated some lines that were in spanish so probably you can find a lot of spelling errors.
output_setup.txt