The ICollectionManager class exposes methods to manage the assets collections:

from unreal_engine import ICollectionManager

print(ICollectionManager.get_collections())
# 1 means ECollectionShareType::CST_Local
print(ICollectionManager.get_child_collections('FooBar', 1))

Collections can be 'static' (they contain references to assets) or 'dynamic' (they apply a search string to get a list of assets)

The api expects knowledge of a bunch of enums mapped as int:

ECollectionShareType

enum Type
{
    CST_System,
    CST_Local,
    CST_Private,
    CST_Shared,
    CST_All,
}

ECollectionStorageMode

enum Type
{
    Static,
    Dynamic,
}

returns the list of collections as a python list of tuples with the form (name, ECollectionShareType)

returns the list of root collections as a python list of tuples with the form (name, ECollectionShareType)

returns the list of child collections for a collection (given as name and type) as a python list of tuples with the form (name, ECollectionShareType)

returns the names of root collections as a python list of strings

returns the names of collections as a python list of strings

create a new static collections given a name and a type

create a new dynamic collections given a name and a type

create a new dynamic collections given a name, a type and a storage mode

move the 'name' collection to the 'new_name' parent