x = (4, 7, 2)
print type(x)
<type 'tuple'>


y = 3, 6, 1
print type(y)
<type 'tuple'>


print x[1]
7

x[0] = 8
Traceback (most recent call last):
  File "C:\Users\Susan\AppData\Local\Enthought\Canopy\User\lib\site-packages\IPython\core\interactiveshell.py", line 2885, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-7-a35b37eb6755>", line 1, in <module>
    x[0] = 8
TypeError: 'tuple' object does not support item assignment

z = ([5,4], [2, 7, 1])
print type(z)
<type 'tuple'>


print type(z[0])
<type 'list'>


z[1][0] = 9
print z
([5, 4], [9, 7, 1])


z[0].append(8)
print z
([5, 4, 8], [9, 7, 1])


z[0].remove(4)
print z
([5, 8], [9, 7, 1])


(a,b) = (2,3)
print a
2

print b
3


x = [2*n for n in range(10000)]
print x
[0, 2, 4, 6, 8, 10, 12, ...  19992, 19994, 19996, 19998]
# not all of list shown


y = (2*n for n in range(10000))
print y
<generator object <genexpr> at 0x0000000003F441B0>


z = [w for w in y]
print z
[0, 2, 4, 6, 8, 10, ..., 19992, 19994, 19996, 19998]
# not all shown, list is too big to show all of it


zz = [v for v in y]
print zz
[]


y = (2*n for n in range(10000))
b = sum([g for g in y if g%10 == 0])
print b
19990000


zzz = [w for w in (2*n for n in range(10000))]
print zzz
[0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ..., 19990, 19992, 19994, 19996, 19998]
# complete list too long to show