In a market, transactions may take place via barter or money exchange. In a barter economy, real goods such as automobiles, and shorts are traded against each other. Obviously, finding somebody who wants to trade an old car in exchange of a sailboat may not always be an easy task. Hence...
/usr/bin/python # -*- coding: utf-8 -*- +def getfile(pathlist): + for filename in pathlist: + try: + fileobj = open(filename, 'r') + except: + continue + return fileobj + def getlist(): - liststr = """ -ac -com.ac -edu.ac -gov.ac -net.ac -mil.ac -org.ac -...