Even though PyMEL has many sub modules, all but pymel.runtime, pymel.api, pymel.util, and pymel.datatypes are imported into the PyMEL namespace.
pymel.core.general pymel.core.animation pymel.core.effects pymel.core.general pymel.core.language pymel.core.modeling pymel.core.nodetypes pymel.core.other pymel.core.rendering pymel.core.system pymel.core.windows pymel.mayahook.version
A wrap of Maya’s Vector, Point, Color, Matrix, TransformationMatrix, Quaternion, EulerRotation types
General utilities which are pymel-independent.”
pymel.util pymel.util.arguments pymel.util.arrays pymel.util.common pymel.util.decoration pymel.util.enum pymel.util.mathutils pymel.util.namedtuple pymel.util.path pymel.util.trees pymel.util.utilitytypes