I used ILSPY to inspect your dll and here is how you need to use it (just tried and it works!):

In [1]: import clr

In [2]: import sys

In [3]: sys.path.append(r"C:\Users\denis.akhiyarov\Downloads\TestEngine_Compile
   ...: d")

In [4]: clr.AddReference("isc.Eng.Hov")
Out[4]: <System.Reflection.RuntimeAssembly at 0x51de4a8>

In [5]: import isc.Eng.Hov

In [6]: from isc.Eng.Hov import *

On Mon, Oct 17, 2016 at 8:32 AM, Artem Zhukov <green.azhukov@gmail.com> wrote:
Denis,

1. from isc.Eng.Hov import * . Result: ImportError: No module named isc.Eng.Hov
2. import HovEngine. Result: ImportError: No module named HovEngine
3. import isc.Eng.Hov.HovEngine. Result: ImportError: No module named isc.Eng.Hov.HovEngine
4. from isc.Eng.Hov.HovEngine import *. Result ImportError: No module named isc.Eng.Hov.HovEngine

I don't know where the mistake could be hidden. As I see from object browser the namespace is HovEngine.
unspecified.jpg
Then, what's wrong?

On Mon, Oct 17, 2016 at 2:12 PM Denis Akhiyarov <denis.akhiyarov@gmail.com> wrote:

Hi Artem,

If clr.FindAssembly("isc.Eng.Hov") and clr.AddReference("isc.Eng.Hov") are working fine, then you need to `import HovEngine`, but not `import isc.Eng.Hov`.

This is assuming isc.Eng.Hov is assembly name, and HovEngine is namespace name.

Thanks,
Denis


On Mon, Oct 17, 2016, 12:08 AM Artem Zhukov <green.azhukov@gmail.com> wrote:
Hello all,
please help me to resolve the following problem. I was trying a lot of things (see 1) and still didn't get it. There is also a project on freelancer for that (see 2):

--
ARTEM ZHUKOV | HVAC/Mech.Engineer | Building Performance Engineer | Sustainability Engineer | HVAC TPM | M: +420 774 081 898
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ARTEM ZHUKOV | HVAC/Mech.Engineer | Building Performance Engineer | Sustainability Engineer | HVAC TPM | M: +420 774 081 898

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