console morning Oct 21, 2014

x = (4, 5, 6)
print x
(4, 5, 6)

y = 9, 5, 6
print y
(9, 5, 6)

type(y)
Out[6]: tuple

print x[1]
5

print y[1]
5

y[0] = 2
Traceback (most recent call last):
  File "C:\Users\Susan\AppData\Local\Enthought\Canopy\User\lib\site-packages\IPython\core\interactiveshell.py", line 2883, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-9-0829a2afab31>", line 1, in <module>
    y[0] = 2
TypeError: 'tuple' object does not support item assignment
z = ([5,6],[7,8])
print z
([5, 6], [7, 8])

type(z)
Out[12]: tuple

z[0][1] = 12
print z
([5, 12], [7, 8])

z[0].append(4)
print z
([5, 12, 4], [7, 8])

z.append(6)
Traceback (most recent call last):
  File "C:\Users\Susan\AppData\Local\Enthought\Canopy\User\lib\site-packages\IPython\core\interactiveshell.py", line 2883, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-17-d9d544939c3c>", line 1, in <module>
    z.append(6)
AttributeError: 'tuple' object has no attribute 'append'


print z
([5, 12, 4], [7, 8])

z[0].remove(5)
z[0].remove(12)
z[0].remove(4)
print

print z
([], [7, 8])