import os

def walkPath(root):
	extensions = {}
	for root, dirs, files in os.walk(root):
		for file in files:
			ext = os.path.splitext(file)[1]
			try:
				extensions[ext] += 1
			except KeyError:
				extensions[ext] = 1
	sortedExts = sorted(extensions.items(), key=lambda x: x[1])
	for ext, count in reversed(sortedExts):
		print(ext, '\t\t', count)

if __name__ == "__main__":
    walkPath(os.getcwd())