jrlen balane wrote: > how many is the maximum member can a list have??? According to this thread http://groups-beta.google.com/group/comp.lang.python/browse_thread/thread/2ddae82bb2c1b871/e00b7903bc887a73 the number of element in a list is stored in an int, so most likely the hard limit is 2**31-1. The practical limit is the available memory. Kent