code: def __init__(
      self,
      file,
      numTables,
      sfntVersion="\000\001\000\000",
      flavor=None,
      flavorData=None,
  ):
      self.file = file
      self.numTables = numTables
      self.sfntVersion = Tag(sfntVersion)
      self.flavor = flavor
      self.flavorData = flavorData
  
      if self.flavor == "woff":
          self.directoryFormat = woffDirectoryFormat
          self.directorySize = woffDirectorySize
          self.DirectoryEntry = WOFFDirectoryEntry
  
          self.signature = "wOFF"
  
          # to calculate WOFF checksum adjustment, we also need the original SFNT offsets
          self.origNextTableOffset = (
              sfntDirectorySize + numTables * sfntDirectoryEntrySize
          )
      else:
          assert not self.flavor, "Unknown flavor '%s'" % self.flavor
          self.directoryFormat = sfntDirectoryFormat
          self.directorySize = sfntDirectorySize
          self.DirectoryEntry = SFNTDirectoryEntry
  
          from fontTools.ttLib import getSearchRange
  
          (
              self.searchRange,
              self.entrySelector,
              self.rangeShift,
          ) = getSearchRange(numTables, 16)
  
      self.directoryOffset = self.file.tell()
      self.nextTableOffset = (
          self.directoryOffset
          + self.directorySize
          + numTables * self.DirectoryEntry.formatSize
      )
      # clear out directory area
      self.file.seek(self.nextTableOffset)
      # make sure we're actually where we want to be. (old cStringIO bug)
      self.file.write(b"\0" * (self.nextTableOffset - self.file.tell()))
      self.tables = OrderedDict()
  
imports: from io import BytesIO
  from types import SimpleNamespace
  from fontTools.misc.textTools import Tag
  from fontTools.misc import sstruct
  from fontTools.ttLib import TTLibError, TTLibFileIsCollectionError
  import struct
  from collections import OrderedDict
  import logging
label_desc: Use image node_id 2 to create a new SFNTWriter object from inherited base classes: object with example: obj = SFNTWriter(file, numTables, sfntVersion, flavor, flavorData)