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<body class='hmmessage'><div dir='ltr'><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">Dear All,</p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);"><br></p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">I have a problem loading an external dll using Python through Python for .NET. I have tried different methodologis following stackoverflow and similar. I will try to summarize the situation and to describe all the steps that I've done.</p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">I have a dll named for e.g. Test.NET.dll. I checked with dotPeek and I can see, clicking on it, x64 and .NET Framework v4.5. On my computer I have installed the .Net Framework 4.</p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">I have also installed Python for .NET in different ways. I think that the best one is download the .whl from this website <a href="http://www.lfd.uci.edu/~gohlke/pythonlibs/#pythonnet">http://www.lfd.uci.edu/~gohlke/pythonlibs/#pythonnet</a> . I have downloaded and installed: pythonnet‑2.0.0.dev1‑cp27‑none‑win_amd64.whl. I can imagine that it will works for .NET 4.0 since<em style="margin: 0px; padding: 0px; border: 0px;">Requires the Microsoft .NET Framework 4.0.</em></p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);"><em style="margin: 0px; padding: 0px; border: 0px;"><br></em></p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">Once I have installed everything, I can do these commands:</p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);"><br></p><pre class="lang-py prettyprint prettyprinted" style="margin-top: 0px; padding: 5px; border: 0px; font-size: 13px; overflow: auto; width: auto; max-height: 600px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; color: rgb(57, 51, 24); word-wrap: normal; background-color: rgb(238, 238, 238);"><code style="margin: 0px; padding: 0px; border: 0px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; white-space: inherit;"><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 139);">import</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> clr
</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 139);">import</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">System</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 139);">print</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">System</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Environmnet</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Version</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 139);">print</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">System</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Environment</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Version</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="lit" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">4.0</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="lit" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">30319.34209</span></code></pre><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">It seems work. Then, I have tried to load my dll typing these commands:</p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);"><br></p><pre class="lang-py prettyprint prettyprinted" style="margin-top: 0px; padding: 5px; border: 0px; font-size: 13px; overflow: auto; width: auto; max-height: 600px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; color: rgb(57, 51, 24); word-wrap: normal; background-color: rgb(238, 238, 238);"><code style="margin: 0px; padding: 0px; border: 0px; font-family: Consolas, Menlo, Monaco, 'Lucida Console', 'Liberation Mono', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Courier New', monospace, sans-serif; white-space: inherit;"><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 139);">import</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> clr
</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> dllpath</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">=</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> r</span><span class="str" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">'C:\Program Files\API\Test.NET'</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">>>></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> clr</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">AddReference</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">(</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">dllpath</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">)</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Traceback</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">(</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">most recent call last</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">):</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">File</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="str" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">"<pyshell#20>"</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">,</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> line </span><span class="lit" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">1</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">,</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="kwd" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 139);">in</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"><</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">module</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">></span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
clr</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">AddReference</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">(</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">dllpath</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">)</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">FileNotFoundException</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">:</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Unable</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> to find assembly </span><span class="str" style="margin: 0px; padding: 0px; border: 0px; color: rgb(128, 0, 0);">'C:\Program Files\API\Test.NET'</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">
at </span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Python</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">Runtime</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">CLRModule</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">.</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">AddReference</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">(</span><span class="typ" style="margin: 0px; padding: 0px; border: 0px; color: rgb(43, 145, 175);">String</span><span class="pln" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);"> name</span><span class="pun" style="margin: 0px; padding: 0px; border: 0px; color: rgb(0, 0, 0);">)</span></code></pre><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">I have also tried to add '.dll' at the end of the path but nothing changed. Then, I have also tried different solutions as described in:</p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);"><ul><li><a href="http://stackoverflow.com/questions/14633695/how-to-install-python-for-net-on-windows" target="_blank" style="line-height: 15.6000003814697px; font-family: Calibri, sans-serif; font-size: 12pt;">http://stackoverflow.com/questions/14633695/how-to-install-python-for-net-on-windows</a><span style="line-height: 15.6000003814697px;">,</span></li><li><span style="line-height: 15.6000003814697px;"><a href="http://stackoverflow.com/questions/13259617/python-for-net-unable-to-find-assembly-error" target="_blank">http://stackoverflow.com/questions/13259617/python-for-net-unable-to-find-assembly-error</a></span></li><li><span style="line-height: 15.6000003814697px;"><a href="https://github.com/geographika/PythonDotNet" target="_blank">https://github.com/geographika/PythonDotNet</a></span></li></ul><div><br></div><span style="line-height: 15.6000003814697px;">and much more.... Unfortunately, it doesn't work and I get different errors. I know that exists IronPython but I was trying to avoid to use it.</span></p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);"><br></p><p style="margin-bottom: 1em; border: 0px; font-size: 15px; clear: both; color: rgb(34, 34, 34); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; line-height: 15.6000003814697px; background-color: rgb(255, 255, 255);">Thanks for your help!</p> </div></body>
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