import os
import sys
from shutil import copy

def main():
	if len(sys.argv) > 1:
		if not os.path.exists('CppPresentations'): #  checks whethear the directory exists and creates it if required
			os.makedirs('CppPresentations')

		path = sys.argv[1]
		dirs = [path + '/' + dir for dir in os.listdir(path) if os.path.isdir(path + '/' + dir)] # finds all the sub directories of the given path
		presentations = [dir + '/' + file for dir in dirs for file in os.listdir(dir) if file.endswith('.pptx')] # gets all the presentations pathes
		for file in presentations:
			copy(file, 'CppPresentations') # copies it
	else:
		print 'usage: <path>'

if __name__ == "__main__":
	main()