e.g. http://stackoverflow.com/questions/14050281/how-to-check-if-a-python-module-exists-without-importing-it
Luigi Pirelli ************************************************************************************************** * Boundless QGIS Support/Development: lpirelli AT boundlessgeo DOT com * LinkedIn: https://www.linkedin.com/in/luigipirelli * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli * GitHub: https://github.com/luipir * Mastering QGIS: https://www.packtpub.com/application-development/mastering-qgis ************************************************************************************************** On 15 January 2016 at 13:24, Luigi Pirelli <lui...@gmail.com> wrote: > btw an exception can be caouse by other dependencies of openpyxl => better > to check the correct exception than a generic one > > Luigi Pirelli > > > ************************************************************************************************** > * Boundless QGIS Support/Development: lpirelli AT boundlessgeo DOT com > * LinkedIn: https://www.linkedin.com/in/luigipirelli > * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli > * GitHub: https://github.com/luipir > * Mastering QGIS: > https://www.packtpub.com/application-development/mastering-qgis > > ************************************************************************************************** > > On 15 January 2016 at 13:23, Luigi Pirelli <lui...@gmail.com> wrote: > >> thank you for sharing >> >> Luigi Pirelli >> >> >> ************************************************************************************************** >> * Boundless QGIS Support/Development: lpirelli AT boundlessgeo DOT com >> * LinkedIn: https://www.linkedin.com/in/luigipirelli >> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli >> * GitHub: https://github.com/luipir >> * Mastering QGIS: >> https://www.packtpub.com/application-development/mastering-qgis >> >> ************************************************************************************************** >> >> On 15 January 2016 at 12:12, Pablo Fernández Moniz < >> pablofernandezmo...@gmail.com> wrote: >> >>> First of all, thank you very much for all the fast replies, they have >>> been very helpful for us. >>> >>> The solution we finally implemented was adding the .egg file for the >>> dependency and loading it when the wider system import fails in the >>> following fashion: >>> >>> import os >>> import sys >>> >>> try: >>> import openpyxl >>> except: >>> package_name = "openpyxl-2.3.2-py2.7.egg" >>> package_path = os.path.join(os.path.dirname(__file__), package_name) >>> sys.path.append(package_path) >>> import openpyxl >>> >>> This may not be a solution for every use case but it gets the job done >>> for us in our setup. >>> >>> Once again, thank you for he fast replies and ideas given. >>> >>> Kind regards, >>> >>> 2016-01-15 4:40 GMT+00:00 Andreas Neumann <a.neum...@carto.net>: >>> >>>> Note that the Windows binaries already contain xlwt and xlrd. Jürgen >>>> was so kind to include it, because I needed it as well for my plugins. Not >>>> sure about openpyxl. On Linux systems it is rather easy to install them >>>> through apt-get, pip or similar mechanisms. Just tell your users that/how >>>> they need/can install them. >>>> >>>> Andreas >>>> >>>> >>>> On 14.01.2016 22:13, Matthias Kuhn wrote: >>>> >>>> Hi Pablo, Tim >>>> >>>> On 01/14/2016 10:00 PM, Tim Sutton wrote: >>>> >>>> Hi >>>> >>>> On 14 Jan 2016, at 18:06, Pablo Fernández Moniz < >>>> pablofernandezmo...@gmail.com> wrote: >>>> >>>> Hi! >>>> >>>> We are currently developing a QGIS plugin were we wish to generate >>>> some Excel files as output. >>>> >>>> In order to build the spreadsheet file we need to use some python >>>> modules installed from pip (openpyxl, xlwt, etc). This dependency will >>>> force every user to manually install the needed package form the pip >>>> repository. >>>> >>>> This situation leaves us with the following question: is possible or >>>> it will be in the future to manage this kind of dependencies from QGIS side >>>> when the user installs the plugin? >>>> >>>> >>>> Although it has been discussed and some prototyping was done to support >>>> automatic installation of dependencies at the last hackfest, there isn’t >>>> anything in the released versions of QGIS to support this yet. If your >>>> packages have no operating system specific binaries in them, then I suggest >>>> to bundle them into your plugin and use an appropriate import path relative >>>> to your code. Note there is a limit on how big your plugin can be (I think >>>> it is 10mb) so you need to ensure your 3rd party deps do not bulk out your >>>> plugin too much. >>>> >>>> >>>> We bundled xlwt and xlrd as .egg with a plugin recently: >>>> >>>> https://github.com/opengisch/shpsync/blob/master/xlwt-1.0.0-py2.7.egg >>>> https://github.com/opengisch/shpsync/blob/master/xlrd-0.9.4-py2.7.egg >>>> >>>> Until there's a cross-platform dependency management (which I know that >>>> several people are looking into) that's the safest road to follow. >>>> >>>> Best >>>> >>>> Matthias >>>> >>>> >>>> Regards >>>> >>>> Tim >>>> >>>> >>>> Thank you for your time! >>>> >>>> Kind regards. >>>> >>>> -- >>>> >>>> Pablo Fernández Moniz >>>> GIT Analyst >>>> >>>> Web <http://www.pablofm.com/> Linkedin >>>> <http://www.linkedin.com/in/pablofernandezmoniz/> Twitter >>>> <http://www.twitter.com/monizpablo> >>>> _______________________________________________ >>>> Qgis-developer mailing list >>>> Qgis-developer@lists.osgeo.org >>>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> >>>> >>>> — >>>> >>>> >>>> >>>> >>>> Tim Sutton >>>> >>>> Visit <http://kartoza.com>http://kartoza.com to find out about open >>>> source: >>>> >>>> * Desktop GIS programming services >>>> * Geospatial web development >>>> * GIS Training >>>> * Consulting Services >>>> >>>> Skype: timlinux Irc: timlinux on #qgis at freenode.net >>>> Tim is a member of the QGIS Project Steering Committee >>>> >>>> Kartoza is a merger between Linfiniti and Afrispatial >>>> >>>> >>>> >>>> _______________________________________________ >>>> Qgis-developer mailing listqgis-develo...@lists.osgeo.org >>>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> >>>> >>>> -- >>>> Matthias Kuhn >>>> OPENGIS.ch - https://www.opengis.ch >>>> Spatial • (Q)GIS • PostGIS • Open Source >>>> >>>> >>>> >>>> _______________________________________________ >>>> Qgis-developer mailing listqgis-develo...@lists.osgeo.org >>>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> >>>> >>>> >>>> _______________________________________________ >>>> Qgis-developer mailing list >>>> Qgis-developer@lists.osgeo.org >>>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>>> >>> >>> >>> >>> -- >>> >>> Pablo Fernández Moniz >>> GIT Analyst >>> >>> Web <http://www.pablofm.com> Linkedin >>> <http://www.linkedin.com/in/pablofernandezmoniz/> Twitter >>> <http://www.twitter.com/monizpablo> >>> >>> _______________________________________________ >>> Qgis-developer mailing list >>> Qgis-developer@lists.osgeo.org >>> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer >>> >> >> >
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