# list_array_gen.py

# list_array_gen.py

myList=[[[] for i in range(3)] for i in range(5)]
print myList
myList[3][1].append('#')
print myList
myList[3][1].append(123)
print myList

# ...or even...
myList=eval(str([[[]]*3]*5))
print myList
myList[3][1].append('abc')
print myList
myList[3][1].append(9)
print myList