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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">What version of grass_sessions do you use?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">I run grass_session 0.4 on Ubuntu 18.04 with GRASS 7.8 and your script works fine…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> grass-user <grass-user-bounces@lists.osgeo.org>
<b>On Behalf Of </b>Manuele Pesenti<br>
<b>Sent:</b> tirsdag 24. august 2021 10:53<br>
<b>To:</b> Grass User <grass-user@lists.osgeo.org><br>
<b>Subject:</b> Re: [GRASS-user] Error import from grass.pygrass.vector library<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">---- Attivato mar, 24 ago 2021 10:10:10 +0200
<b>Stefan Blumentrath <<a href="mailto:Stefan.Blumentrath@nina.no">Stefan.Blumentrath@nina.no</a>></b> ha scritto ----<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hm…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Did you initialize the session, e.g. like:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">with Session(gisdb="/tmp", location="location", create_opts="EPSG:4326"):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> from grass.pygrass.vector import Vector<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Yes it's exactly what I do, the strange fact is that I can by-pass the exception assigning the LD_LIBRARY_PATH value before running the script even if even now before importing
vector lib this env variable has the correct value exactly thanks to the grass_session lib import...<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">so the script modified as you suggested reported here under still raise the exception<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># -*- coding: utf-8 -*-</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">import os, sys</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">GISBASE = '/usr/lib/grass78'</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">GRASSBIN = '/usr/bin/grass78'</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># Define GRASS-Python environment</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">os.environ['GISBASE'] = GISBASE</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">os.environ['GRASSBIN'] = GRASSBIN</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">sys.path.append(os.path.join(GISBASE, "etc", "python"))</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">from grass_session import Session</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">import grass.script as gs</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print(f"LD_LIBRARY_PATH: {os.environ['LD_LIBRARY_PATH']}")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print(f"GRASSBIN: {os.environ['GRASSBIN']}")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">with Session(gisdb="/tmp", location="location", create_opts="EPSG:4326"):</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"> from grass.pygrass.vector import Vector</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print('DONE!')</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">while the old script (for convenience reported here under) runned as
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="font"><span style="font-size:10.0pt;font-family:"Courier New"">$ LD_LIBRARY_PATH=$(grass78 --config path)/lib python import_test.py
</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="font"><span style="font-size:10.0pt;font-family:"Courier New"">LD_LIBRARY_PATH: /usr/lib/grass78/lib</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="font"><span style="font-size:10.0pt;font-family:"Courier New"">GRASSBIN: /usr/bin/grass78</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="font"><span style="font-size:10.0pt;font-family:"Courier New"">DONE!</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">returns just what printed in the script without raising the exception.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># -*- coding: utf-8 -*-</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">import os, sys</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">GISBASE = '/usr/lib/grass78'</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">GRASSBIN = '/usr/bin/grass78'</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># Define GRASS-Python environment</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">os.environ['GISBASE'] = GISBASE</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">os.environ['GRASSBIN'] = GRASSBIN</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">sys.path.append(os.path.join(GISBASE, "etc", "python"))</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># from grass_session import Session</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">import grass.script as gs</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print(f"LD_LIBRARY_PATH: {os.environ['LD_LIBRARY_PATH']}")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print(f"GRASSBIN: {os.environ['GRASSBIN']}")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># with Session(gisdb="/tmp", location="location", create_opts="EPSG:4326"):</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">from grass.pygrass.vector import Vector</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span class="highlight"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print('DONE!')</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Cheers<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Manuele<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Cheers<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Stefan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">From:</span></b><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> grass-user <<a href="mailto:grass-user-bounces@lists.osgeo.org" target="_blank">grass-user-bounces@lists.osgeo.org</a>>
<b>On Behalf Of </b>Manuele Pesenti<br>
<b>Sent:</b> tirsdag 24. august 2021 09:38<br>
<b>To:</b> Grass User <<a href="mailto:grass-user@lists.osgeo.org" target="_blank">grass-user@lists.osgeo.org</a>><br>
<b>Subject:</b> Re: [GRASS-user] Error import from grass.pygrass.vector library<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Drear Stefan,</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><br>
<span class="size">thanks for your quick reply but the solution is not so clear, I already use grass_session library even if not reported in the attached example, how can it helps with the issue? Just import the vector library after the session is loaded does
not solve as far as I've tested.</span><br>
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<span class="size">Cheers</span><br>
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<span class="size"> Manuele</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">---- Attivato ven, 20 ago 2021 21:26:22 +0200
<b>Stefan Blumentrath <<a href="mailto:Stefan.Blumentrath@nina.no" target="_blank">Stefan.Blumentrath@nina.no</a>></b> ha scritto ----</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Dear Manuele,</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">For ctypes in pygrass, the C-libraries need to be loaded explicitly.</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">You could have a look here:</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fzarch%2Fgrass-session%2Fblob%2F6097f834be20ee0d703deb2af90f22d6dc66f368%2Fgrass_session%2Fsession.py%23L332&data=04%7C01%7C%7C787f11b2fc5246a7da6d08d966dc9ee5%7C6cef373021314901831055b3abf02c73%7C0%7C0%7C637653920686707703%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=XA2vZhGMasSyLFE3KRrBPaXUjewtp2MNBzA4Dwfre9g%3D&reserved=0" target="_blank">https://github.com/zarch/grass-session/blob/6097f834be20ee0d703deb2af90f22d6dc66f368/grass_session/session.py#L332</a></span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">to see how it can be done, or just use the grass_session python library (pip install grass-session) for convenience…</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Cheers</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Stefan</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><b><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">From:</span></b></span><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> grass-user <<a href="mailto:grass-user-bounces@lists.osgeo.org" target="_blank">grass-user-bounces@lists.osgeo.org</a>>
<b>On Behalf Of </b>Manuele Pesenti</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><br>
<span class="size"><b>Sent:</b> fredag 20. august 2021 16:40</span><br>
<span class="size"><b>To:</b> grass-user <<a href="mailto:grass-user@lists.osgeo.org" target="_blank">grass-user@lists.osgeo.org</a>></span><br>
<span class="size"><b>Subject:</b> [GRASS-user] Error import from grass.pygrass.vector library</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Dear All,</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">I'm moving my first steps on the development of a python script that uses Grass, but I cannot import from the grass.pygrass.vector library.</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">I work on a Ubuntu/Linux environment and I've installed grass using apt, this is the test script I'm currently running:</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># -*- coding: utf-8 -*-</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">import os, sys</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">GISBASE = '/usr/lib/grass78'</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">GRASSBIN = '/usr/bin/grass78'</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC"># Define GRASS-Python environment</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">os.environ['GISBASE'] = GISBASE</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">os.environ['GRASSBIN'] = GRASSBIN</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">sys.path.append(os.path.join(GISBASE, "etc", "python"))</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">from grass_session import Session</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">import grass.script as gs</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print(f"LD_LIBRARY_PATH: {os.environ['LD_LIBRARY_PATH']}")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print(f"GRASSBIN: {os.environ['GRASSBIN']}")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">from grass.pygrass.vector import Vector</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#CCCCCC">print('DONE!')</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">and this is the output:</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">$ python import_test.py
</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">LD_LIBRARY_PATH: /usr/lib/grass78/lib</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">GRASSBIN: /usr/bin/grass78</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">Traceback (most recent call last):</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/grass78/etc/python/grass/lib/ctypes_loader.py", line 76, in load</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> return ctypes.cdll.LoadLibrary(path)</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/python3.9/ctypes/__init__.py", line 452, in LoadLibrary</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> return self._dlltype(name)</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/python3.9/ctypes/__init__.py", line 374, in __init__</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> self._handle = _dlopen(self._name, mode)</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">OSError: libgrass_datetime.7.8.so: cannot open shared object file: No such file or directory</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">During handling of the above exception, another exception occurred:</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New"">Traceback (most recent call last):</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/home/manuele/Lavoro/ETS/ETSCore/scripts/import_test.py", line 21, in <module></span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> from grass.pygrass.vector import Vector</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/grass78/etc/python/grass/pygrass/vector/__init__.py", line 5, in <module></span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> import grass.lib.gis as libgis</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/grass78/etc/python/grass/lib/gis.py", line 23, in <module></span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> _libs["grass_gis.7.8"] = load_library("grass_gis.7.8")</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/grass78/etc/python/grass/lib/ctypes_loader.py", line 62, in load_library</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> return self.load(path)</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> File "/usr/lib/grass78/etc/python/grass/lib/ctypes_loader.py", line 78, in load</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New""> raise ImportError(e)</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Courier New";color:black;background:#FFCC99">ImportError: libgrass_datetime.7.8.so: cannot open shared object file: No such file or directory</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Thank you very mutch for any help</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif">Cheers</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> Manuele</span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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</blockquote>
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<p class="MsoNormal"><span class="size"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> </span></span><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"> <o:p></o:p></span></p>
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</blockquote>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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