Python script to change the font family of individual font files. It's useful if you have multiple fonts that should be the same family but are not grouped together in GUI software.

font_family.py

#!/usr/bin/python

import os, sys, string, re, MacOS
from string import capwords
import fontforge as ff
from optparse import OptionParser

SKIP_FILES = ['.DS_Store', '.AppleDB', 'convert_font.log', 'Icon?']

class DirectoryWalker:
    # a forward iterator that traverses a directory tree
	def __init__(self, directory):
		self.stack = [directory]
		self.files = []
		self.index = 0
	def __getitem__(self, index):
		while 1:
			try:
				file = self.files[self.index]
				self.index = self.index + 1
			except IndexError:
				# pop next directory from stack
				self.directory = self.stack.pop()
				self.files = os.listdir(self.directory)
				self.index = 0
			else:
				# got a filename
				fullname = os.path.join(self.directory, file)
				if os.path.isdir(fullname) and not os.path.islink(fullname):
					self.stack.append(fullname)
				return fullname
SKIPPED_FILES = []	
def main():
	DEFAULT_FONT_DIR = os.path.join(os.path.expanduser('~'), 'FontsConverted')
	parser=OptionParser()
	usage = "\n  %prog [options]"
	parser = OptionParser(usage=usage)
	parser.add_option("-f", dest="FAMILY", default=None, help="set the family name to change to")
	parser.add_option("-t", dest="TEST", action='store_true', default=False, help="test the family conversion without changing any files")
		
	(options, args) = parser.parse_args()

	TEST = options.TEST
	FAMILY = options.FAMILY.strip()

	if not '-f' in sys.argv or not FAMILY:
		print "\nYou must specify a family name to change to for this utility to do it's magic.\n"
		parser.print_help()	
	
	if TEST:
		print '\n------ TESTING ONLY --------\n'
		for file in DirectoryWalker('.'):
			file = file.decode("utf-8")
			head,tail=os.path.split(file)
			if not tail in SKIP_FILES:
				if os.path.isfile(file):
					try:
						macfiletype = MacOS.GetCreatorAndType(file)
						print 'DEBUG MAC CREATOR:', macfiletype
					except: pass
					if list(macfiletype)[0] in ['2T2L', '2t2l','VOMD', 'vomd', 'RVOM', 'rvom','\xbfSCC'] and list(macfiletype)[1] in ['LIFF','liff']: continue
					try:
						print '\nOPEN: %s\n--------------------------------------------------------------------------' % file
						f=ff.open(file)
						font_family = f.familyname
						if f.is_cid: font_family = f.cidfamilyname
						f.close()
						print "   TEST: Family '%s' will become '%s'." % (font_family, FAMILY) 
					except EnvironmentError:
						print "Error:", file
		print '\n------ TESTING COMPLETE --------\n'
	else:
		print '\n------ STARTING CONVERSION --------\n'
		for file in DirectoryWalker('.'):
			file = file.decode("utf-8")
			head,tail=os.path.split(file)
			if not tail in SKIP_FILES:
				if os.path.isfile(file):
					try:
						macfiletype = MacOS.GetCreatorAndType(file)
						print 'DEBUG MAC CREATOR:', macfiletype
					except: pass
					# skip suitcases that crash fontforge
					if list(macfiletype)[0] in ['2T2L', '2t2l','VOMD', 'vomd', 'RVOM', 'rvom','\xbfSCC'] and list(macfiletype)[1] in ['LIFF','liff']: continue
					try:
						print '\nOPEN: %s\n--------------------------------------------------------------------------' % file
						f=ff.open(file)
						if f.is_cid:
							font_family = f.cidfamilyname
							f.cidfamilyname = FAMILY
							f.familyname = FAMILY
						else:
							font_family = f.familyname
							f.familyname = FAMILY
						f.generate(file)
						f.close()
						print>>sys.stdout, '\tFAMILY: "%s" --> %s' % (font_family, FAMILY)
					except EnvironmentError, UnicodeDecodeError:
						SKIPPED_FILES.append(file)
				else:
					print "Skipping Directory: ", file
			else:
				pass
		
		print '\n------ FINISHED CONVERSION --------\n'

	for entry in SKIPPED_FILES:
		print>>sys.stdout, "SKIPPED:", entry
	
if __name__ == "__main__":
	main()