Packages
Here are the packages with brief descriptions (if available):

pyregfi | Python interface to the regfi library
structures | Low-level data structures and C API mappings
REGFI_VK |
REGFI_SK |
REGFI_SUBKEY_LIST |
REGFI_VALUE_LIST |
REGFI_CLASSNAME |
REGFI_DATA |
REGFI_NK |
REGFI_ITERATOR |
REGFI_FILE |
REGFI_RAW_FILE |
REGFI_DATA__interpreted |
winsec | Low-level data structures for winsec library
WINSEC_UUID |
WINSEC_DOM_SID |
WINSEC_ACE |
WINSEC_ACL |
WINSEC_DESC |
ACE | Represents a Microsoft access control entry, which are elements of access control lists
SecurityDescriptor | A Microsoft security descriptor For more information, see: http://msdn.microsoft.com/en-us/library/aa379563%28v=vs.85%29.aspx
DATA_TYPES | An enumeration of registry Value data types
LOG_TYPES | An enumeration of log message types
_StructureWrapper | Abstract class for most objects returned by the library
Key | Registry key These represent registry keys (REGFI_NK records) and provide access to their subkeys, values, and other metadata
Value | Registry value (metadata)
Security | Represents a registry SK record which contains a security descriptor
_GenericList | Abstract class for ValueList and SubkeyList
SubkeyList | The list of subkeys associated with a Key
ValueList | The list of values associated with a Key
Hive | Represents a single registry hive (file)
HiveIterator | A special purpose iterator for registry hives