Use extra_requires to install optional dependencies.
Use extra_requires to install optional dependencies.

'analysis' will install weblogo & matplotlib
'trajectories' will install MDAnalysis
'all' will install them all

HubLot/PBxplore,pierrepo/PBxplore,jbarnoud/PBxplore,jbarnoud/PBxplore,pierrepo/PBxplore,HubLot/PBxplore