How to use the pefile.DataContainer function in pefile

entropy += - p_x*math.log(p_x, 2)
              
        return entropy



class DataContainer:
    """Generic data container."""
	
    def __init__(self, **args):
        for key, value in args.items():
            setattr(self, key, value)



class ImportDescData(DataContainer):
    """Holds import descriptor information.
    
    dll:        name of the imported DLL
    imports:    list of imported symbols (ImportData instances)
    struct:     IMAGE_IMPORT_DESCRIPTOR sctruture
    """

class ImportData(DataContainer):
    """Holds imported symbol's information.
    
    ordinal:    Ordinal of the symbol
    name:       Name of the symbol
    bound:      If the symbol is bound, this contains
                the address.
    """

class RelocationData(DataContainer):
    """Holds relocation information.
    
    type:       Type of relocation
                The type string is can be obtained by
                RELOCATION_TYPE[type]
    rva:        RVA of the relocation
    """

class TlsData(DataContainer):
    """Holds TLS information.
    
    struct:     IMAGE_TLS_DIRECTORY structure
    """

class BoundImportDescData(DataContainer):
    """Holds bound import descriptor data.
    
    This directory entry will provide with information on the
    DLLs this PE files has been bound to (if bound at all).
    The structure will contain the name and timestamp of the
    DLL at the time of binding so that the loader can know
    whether it differs from the one currently present in the
    system and must, therefore, re-bind the PE's imports.
    
    struct:     IMAGE_BOUND_IMPORT_DESCRIPTOR structure
    name:       DLL name
    entries:    list of entries (BoundImportRefData instances)
                the entries will exist if this DLL has forwarded
                symbols. If so, the destination DLL will have an
                entry in this list.
    """

dll:        name of the imported DLL
    imports:    list of imported symbols (ImportData instances)
    struct:     IMAGE_IMPORT_DESCRIPTOR sctruture
    """

class ImportData(DataContainer):
    """Holds imported symbol's information.
    
    ordinal:    Ordinal of the symbol
    name:       Name of the symbol
    bound:      If the symbol is bound, this contains
                the address.
    """
    
class ExportDirData(DataContainer):
    """Holds export directory information.
                    
    struct:     IMAGE_EXPORT_DIRECTORY structure
    symbols:    list of exported symbols (ExportData instances)
"""
    
class ExportData(DataContainer):
    """Holds exported symbols' information.
    
    ordinal:    ordinal of the symbol
    address:    address of the symbol
    name:       name of the symbol (None if the symbol is
                exported by ordinal only)
    forwarder:  if the symbol is forwarded it will
                contain the name of the target symbol,
                None otherwise.

This directory entry will provide with information on the
    DLLs this PE files has been bound to (if bound at all).
    The structure will contain the name and timestamp of the
    DLL at the time of binding so that the loader can know
    whether it differs from the one currently present in the
    system and must, therefore, re-bind the PE's imports.
    
    struct:     IMAGE_BOUND_IMPORT_DESCRIPTOR structure
    name:       DLL name
    entries:    list of entries (BoundImportRefData instances)
                the entries will exist if this DLL has forwarded
                symbols. If so, the destination DLL will have an
                entry in this list.
    """

class BoundImportRefData(DataContainer):
    """Holds bound import forwader reference data.
    
    Contains the same information as the bound descriptor but
    for forwarded DLLs, if any.
    
    struct:     IMAGE_BOUND_FORWARDER_REF structure
    name:       dll name
    """


class PE:
    """A Portable Executable representation.
    
    This class provides access to most of the information in a PE file.
    
    It expects to be supplied the name of the file to load or PE data

and points to the actual resource data, this
                attribute will reference the corresponding
                ResourceDataEntryData instance.
    (Either of the 'directory' or 'data' attribute will exist,
    but not both.)
    """

class ResourceDataEntryData(DataContainer):
    """Holds resource data entry information.
    
    struct:     IMAGE_RESOURCE_DATA_ENTRY structure
    lang:       Primary language ID
    sublang:    Sublanguage ID
    """

class DebugData(DataContainer):
    """Holds debug information.
    
    struct:     IMAGE_DEBUG_DIRECTORY structure
    """

class BaseRelocationData(DataContainer):
    """Holds base relocation information.
    
    struct:     IMAGE_BASE_RELOCATION structure
    entries:    list of relocation data (RelocationData instances)
    """
    
class RelocationData(DataContainer):
    """Holds relocation information.
    
    type:       Type of relocation

"""Holds imported symbol's information.
    
    ordinal:    Ordinal of the symbol
    name:       Name of the symbol
    bound:      If the symbol is bound, this contains
                the address.
    """
    
class ExportDirData(DataContainer):
    """Holds export directory information.
                    
    struct:     IMAGE_EXPORT_DIRECTORY structure
    symbols:    list of exported symbols (ExportData instances)
"""
    
class ExportData(DataContainer):
    """Holds exported symbols' information.
    
    ordinal:    ordinal of the symbol
    address:    address of the symbol
    name:       name of the symbol (None if the symbol is
                exported by ordinal only)
    forwarder:  if the symbol is forwarded it will
                contain the name of the target symbol,
                None otherwise.
    """
              

class ResourceDirData(DataContainer):
    """Holds resource directory information.
    
    struct:     IMAGE_RESOURCE_DIRECTORY structure

attribute will contain the name string. None
                otherwise. If identified by id, the id is
                availabe at 'struct.Id'
    id:         the id, also in struct.Id
    directory:  If this entry has a lower level directory
                this attribute will point to the
                ResourceDirData instance representing it.
    data:       If this entry has no futher lower directories
                and points to the actual resource data, this
                attribute will reference the corresponding
                ResourceDataEntryData instance.
    (Either of the 'directory' or 'data' attribute will exist,
    but not both.)
    """

class ResourceDataEntryData(DataContainer):
    """Holds resource data entry information.
    
    struct:     IMAGE_RESOURCE_DATA_ENTRY structure
    lang:       Primary language ID
    sublang:    Sublanguage ID
    """

class DebugData(DataContainer):
    """Holds debug information.
    
    struct:     IMAGE_DEBUG_DIRECTORY structure
    """

class BaseRelocationData(DataContainer):
    """Holds base relocation information.

"""Holds base relocation information.
    
    struct:     IMAGE_BASE_RELOCATION structure
    entries:    list of relocation data (RelocationData instances)
    """
    
class RelocationData(DataContainer):
    """Holds relocation information.
    
    type:       Type of relocation
                The type string is can be obtained by
                RELOCATION_TYPE[type]
    rva:        RVA of the relocation
    """

class TlsData(DataContainer):
    """Holds TLS information.
    
    struct:     IMAGE_TLS_DIRECTORY structure
    """

class BoundImportDescData(DataContainer):
    """Holds bound import descriptor data.
    
    This directory entry will provide with information on the
    DLLs this PE files has been bound to (if bound at all).
    The structure will contain the name and timestamp of the
    DLL at the time of binding so that the loader can know
    whether it differs from the one currently present in the
    system and must, therefore, re-bind the PE's imports.
    
    struct:     IMAGE_BOUND_IMPORT_DESCRIPTOR structure

def __init__(self, **args):
        for key, value in args.items():
            setattr(self, key, value)



class ImportDescData(DataContainer):
    """Holds import descriptor information.
    
    dll:        name of the imported DLL
    imports:    list of imported symbols (ImportData instances)
    struct:     IMAGE_IMPORT_DESCRIPTOR sctruture
    """

class ImportData(DataContainer):
    """Holds imported symbol's information.
    
    ordinal:    Ordinal of the symbol
    name:       Name of the symbol
    bound:      If the symbol is bound, this contains
                the address.
    """
    
class ExportDirData(DataContainer):
    """Holds export directory information.
                    
    struct:     IMAGE_EXPORT_DIRECTORY structure
    symbols:    list of exported symbols (ExportData instances)
"""
    
class ExportData(DataContainer):

name:       name of the symbol (None if the symbol is
                exported by ordinal only)
    forwarder:  if the symbol is forwarded it will
                contain the name of the target symbol,
                None otherwise.
    """
              

class ResourceDirData(DataContainer):
    """Holds resource directory information.
    
    struct:     IMAGE_RESOURCE_DIRECTORY structure
    entries:    list of entries (ResourceDirEntryData instances)
    """
    
class ResourceDirEntryData(DataContainer):
    """Holds resource directory entry data.
    
    struct:     IMAGE_RESOURCE_DIRECTORY_ENTRY structure
    name:       If the resource is identified by name this
                attribute will contain the name string. None
                otherwise. If identified by id, the id is
                availabe at 'struct.Id'
    id:         the id, also in struct.Id
    directory:  If this entry has a lower level directory
                this attribute will point to the
                ResourceDirData instance representing it.
    data:       If this entry has no futher lower directories
                and points to the actual resource data, this
                attribute will reference the corresponding
                ResourceDataEntryData instance.
    (Either of the 'directory' or 'data' attribute will exist,