# Suppose the data file contains lines of numbers,
#   and each number is a separate data point.
>>> #3 56 6 98
>>> #44 6 8 9 10 100
>>> #the string method "split" will help.
>>> #
>>> x = "hello     there   my friend  "
>>> x.split()
['hello', 'there', 'my', 'friend']
#
# Suppose the first line of file data.txt contains "55 45 4 3\n"
#
>>> f = open("data.txt",'r')
>>> line = f.readlin()
>>> line 
"55 45 4 3\n"
#
>>> numStrings = line.split()
>>> numStrings
['55', '45', '4', '3']
>>> # create a new list which holds the ints
>>> intVals = []
>>> for n in numStrings:
	intVals.append(int(n))
>>> intVals
[55, 45, 4, 3]
#
>>> # Here are examples using the list method, append.
#     Also, the examples below show how to use numbers to
#     index the elements of nested lists.
# 
>>> x = []
>>> x.append(23)
>>> x
[23]
>>> x.append(54)
>>> x
[23, 54]
>>> x1 = [0,1,2]
>>> x2 = [3,4,5]
>>> x.append(x1)
>>> x
[23, 54, [0, 1, 2]]
>>> x[0]
23
>>> x[1]
54
>>> x[2]
[0, 1, 2]
>>> x.append(["jkfd","jd","jj"])
>>> x
[23, 54, [0, 1, 2], ['jkfd', 'jd', 'jj']]
>>> x[3]
['jkfd', 'jd', 'jj']
>>> x[3][1]
'jd'
>>>