The MDAnalysis.core modules contain functionality essential for MDAnalysis, such as the central data structures in MDAnalysis.core.universe and MDAnalysis.core.groups or the selection definitions and parsing in MDAnalysis.core.selection.
core/init
All users of MDAnalysis need to understand the two most important classes in this section, namely the ~MDAnalysis.core.universe.Universe and the ~MDAnalysis.core.groups.AtomGroup.
core/universe core/groups
The topology system is primarily of interest to developers.
core/topology core/topologyobjects core/topologyattrs
Developer notes for Topology
Parsers <topology-parsers-developer-notes>
The selection system is primarily of interest to developers.
core/selection