side-by-side installations of Python, one for each project. It doesn’t actually install separate copies of Python, but it does provide a clever way to keep different project environ- ments isolated. Let’s see how have virtualenv installed, just fire up a shell and create your own environment. I usually create a project folder and a venv folder within: $ mkdir myproject $ cd myproject $ virtualenv venv New python executable venv/bin/python Installing setuptools, pip............done. Now, whenever you want to work on a project, you only have to activate the corresponding environment. On OS X and Linux, do the following: $

du verbe start. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 du verbe end. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] ends 2020-07-15 [Test du prototype] ends 2020-07-25 @enduml Début/Fin Il est possible de définir les deux de façon absolu, en précisant des dates. @startuml Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 [Design

du verbe start. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 du verbe end. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] ends 2020-07-15 [Test du prototype] ends 2020-07-25 @enduml Début/Fin Il est possible de définir les deux de façon absolu, en précisant des dates. @startuml Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 [Design

début pour l'ensemble du projet. Par défault, la première tâche commence à cette date. @startgantt Project starts the 20th of september 2017 [Design du prototype] as [TASK1] lasts 13 days [TASK1] is colored in Lavender/LightBlue @endgantt 10.7 Close day It is possible to close some day. @startgantt project starts the 2018/04/09 saturday are closed sunday are closed 2018/05/01 is closed 2018/04/17 to 2018/04/19 This syntax is compatible with OrgMode @startwbs * Business Process Modelling WBS ** Launch the project *** Complete Stakeholder Research *** Initial Implementation Plan ** Design phase *** Model of AsIs

début pour l'ensemble du projet. Par défault, la première tâche commence à cette date. @startgantt Project starts the 20th of september 2017 [Design du prototype] as [TASK1] lasts 13 days [TASK1] is colored in Lavender/LightBlue @endgantt 10.7 Close day It is possible to close some day. @startgantt project starts the 2018/04/09 saturday are closed sunday are closed 2018/05/01 is closed 2018/04/17 to 2018/04/19 This syntax is compatible with OrgMode @startwbs * Business Process Modelling WBS ** Launch the project *** Complete Stakeholder Research *** Initial Implementation Plan ** Design phase *** Model of AsIs

début pour l'ensemble du projet. Par défault, la première tâche commence à cette date. @startgantt Project starts the 20th of september 2017 [Design du prototype] as [TASK1] lasts 13 days [TASK1] is colored in Lavender/LightBlue @endgantt 10.7 Close day It is possible to close some day. @startgantt project starts the 2018/04/09 saturday are closed sunday are closed 2018/05/01 is closed 2018/04/17 to 2018/04/19 This syntax is compatible with OrgMode @startwbs * Business Process Modelling WBS ** Launch the project *** Complete Stakeholder Research *** Initial Implementation Plan ** Design phase *** Model of AsIs

du verbe start. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 du verbe end. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] ends 2020-07-15 [Test du prototype] ends 2020-07-25 @enduml Début/Fin Il est possible de définir les deux de façon absolu, en précisant des dates. @startuml Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 [Design

du verbe start. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 du verbe end. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] ends 2020-07-15 [Test du prototype] ends 2020-07-25 @enduml Début/Fin Il est possible de définir les deux de façon absolu, en précisant des dates. @startuml Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 [Design

du verbe start. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 du verbe end. @startuml [Design du prototype] lasts 15 days [Test du prototype] lasts 10 days Project starts 2020-07-01 [Design du prototype] ends 2020-07-15 [Test du prototype] ends 2020-07-25 @enduml Début/Fin Il est possible de définir les deux de façon absolu, en précisant des dates. @startuml Project starts 2020-07-01 [Design du prototype] starts 2020-07-01 [Test du prototype] starts 2020-07-16 [Design

début pour l'ensemble du projet. Par défault, la première tâche commence à cette date. @startgantt Project starts the 20th of september 2017 [Design du prototype] as [TASK1] lasts 13 days [TASK1] is colored in Lavender/LightBlue @endgantt 10.7 Close day It is possible to close some day. @startgantt project starts the 2018/04/09 saturday are closed sunday are closed 2018/05/01 is closed 2018/04/17 to 2018/04/19 Technology_Service(internetBrowser , "Internet Browser Generic & Plugin") Technology_Service(internetBrowserPlugin , "Some Internet Browser Plugin") Technology_Service(webServer, "Some web server") 'Relationships