nameDict = {}
for name in nameList:
if name[0] not in nameDict:
nameDict[name[0]] = 1
else:
nameDict[name[0]] += 1
用dictionary來計算
字母當作key，出現次數當作value

nameDict[name[0]] = nameDict.get(name[0], 0) + 1

elegant solution!

漂亮~~