PyObject doesn't has As function

[sim273]

Environment
Pythonnet version: 2.0+
Python version: Python 2.7
Operating System: Windows 7
Details:
The code doesn't works on the ide gives the following error:
'PyObject' does not contain a definition for 'As' and no extension method 'As' accepting a first argument of type 'PyObject' could be found (are you missing a using directive or an assembly reference?

[yagweb]

Your Pythonnet version is too old. Use Pythonnet 2.3+ or build from master manually.

[sim273]

Actually I had downloaded the repository of pythonnet and added it to the project,I m very new to this,if anyone can help me out please.

[herrsa1]

I also have this problem.
Ive been using
python 3.6
pythonnet 2.3.0
and tried the pythonnet 2.4.0.dev built directly from the github master and it still doesnt work.