I managed to write a script that would give the vertical center of a single glyph. Now I have been trying to expand it to give the centers of a list of glyphs with no luck. The script below only gives the center of the last glyph in the list. So what am I doing wrong here?

# Find All Centers 

import os
from robofab.world import CurrentFont
from robofab.interface.all.dialogs import GetFolder

f = CurrentFont()

tString = "zero minus plus equal"
glyphList = tString.split(" ")

def collectData(f):
	path = GetFolder()
	if path:
		collectedData = []

		for i in glyphList:
			g = fl.font[fl.font.FindGlyph(i)]
			rect = g.GetBoundingRect()
			gcenter = str(rect.height / 2)
		collectedData.append("g.name: "+g.name+", "+"gcenter: "+gcenter)
		collectedData.sort()
		collectedData = "\n".join(collectedData)
		theFileName = os.path.basename(f.path) 
		theFileName = theFileName.split(".")[0] + ".txt" 
		thePath = os.path.join(path,theFileName) 
		theFile = open(thePath,"w")
		theFile.write(collectedData)
		theFile.close()
		print "Done with %s!" % f.info.fontName
		
if len(f) != 0:
	collectData(f)


George