>>> n = 2
>>> n
2

>>> s = "My Python"
>>> print s
My Python

>>> l = ["c++", 'c', 'perl', 'python']
>>> print l
['c++', 'c', 'perl', 'python']

>>> t = (1, 2, 3)
>>> t
(1, 2, 3)

>>> d = {'a':1, 'b':2, 'c':3}
>>> d
{'a': 1, 'c': 3, 'b': 2}

>>> f = open("demo.txt", 'w')
>>> f.write("My own text")
>>> f.close()

>>> f = open("demo.txt", 'r')
>>> f.readline()
'My own text'

--------------------------------------------------------
>>> x = 4
>>> y = 8
>>> y/x
2
>>> x/y
??

>>> s[1]
'y'

>>> s[1:4]
'y P'

>>> l[2]
'perl'
 
>>> l[1:3]
['c', 'perl']

>>> d.keys()
['a', 'c', 'b']

>>> d.values()
[1, 3, 2]

>>> t[0:2]
(1, 2)
 
 

--------------------------------------------------------
>>> l[0] = "Java"

>>> l
??

>>> l[0:2] = ["Java", "HTML"]
>>> l
??
 
>>> s[1] = 'your'
??

>>> t[1] = 5
??

>>> d[1]
??

>>> d['a']
1