Python 3.2.3 (default, Feb 20 2013, 14:44:27) 
[GCC 4.7.2] on linux2
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>> 
E
======================================================================
ERROR: test_square_list (__main__.TestMarch21)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/sukaeto/good_stuff/documents/teaching/CISC106/spring-2013/examples/march21/march21_tests.py", line 26, in test_square_list
    self.assertEqual(square_list([1, 2, 3, 4, 5]), [1, 4, 9, 16, 25])
NameError: global name 'square_list' is not defined

----------------------------------------------------------------------
Ran 1 test in 0.006s

FAILED (errors=1)
>>> [1, 2, 3]
[1, 2, 3]
>>> x = [1, 2, 3]
>>> x
[1, 2, 3]
>>> x + [4]
[1, 2, 3, 4]
>>> x
[1, 2, 3]
>>> y = 5
>>> y + 5
10
>>> y
5
>>> y = y + 5
>>> x = x + [4]
>>> x
[1, 2, 3, 4]
>>> x
[1, 2, 3, 4]
>>> x = [0] + x
>>> x
[0, 1, 2, 3, 4]
>>> #no brackets around the thing we're adding:
>>> x = x + 5
Traceback (most recent call last):
  File "<pyshell#15>", line 1, in <module>
    x = x + 5
TypeError: can only concatenate list (not "int") to list
>>> x
[0, 1, 2, 3, 4]
>>> #gives us a type error
>>> ================================ RESTART ================================
>>> 
.
----------------------------------------------------------------------
Ran 1 test in 0.008s

OK
>>> ================================ RESTART ================================
>>> 
..
----------------------------------------------------------------------
Ran 2 tests in 0.009s

OK
>>> ================================ RESTART ================================
>>> 
E..
======================================================================
ERROR: test_maybe_inner_product (__main__.TestMarch21)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/sukaeto/good_stuff/documents/teaching/CISC106/spring-2013/examples/march21/march21_tests.py", line 35, in test_maybe_inner_product
    48))
TypeError: maybe_inner_product() takes exactly 1 positional argument (2 given)

----------------------------------------------------------------------
Ran 3 tests in 0.016s

FAILED (errors=1)
>>> ================================ RESTART ================================
>>> 
...
----------------------------------------------------------------------
Ran 3 tests in 0.014s

OK
>>> ================================ RESTART ================================
>>> 
....
----------------------------------------------------------------------
Ran 4 tests in 0.017s

OK
>>> ================================ RESTART ================================
>>> 
....
----------------------------------------------------------------------
Ran 4 tests in 0.018s

OK
>>> (1, 2, 3, 4)
(1, 2, 3, 4)
>>> y = (1, 2, 3, 4)
>>> #indexing into a tuple:
>>> y[2]
3
>>> #cannot change a tuple, it is IMMUTABLE
>>> y[2] = 'three'
Traceback (most recent call last):
  File "<pyshell#23>", line 1, in <module>
    y[2] = 'three'
TypeError: 'tuple' object does not support item assignment
>>> y[:]
(1, 2, 3, 4)
>>> y[1:]
(2, 3, 4)
>>> y[:2]
(1, 2)
>>> y[1:3]
(2, 3)
>>> (1)
1
>>> (1,)
(1,)
>>> [1]
[1]
>>> (1) != (1,)
True
>>> z = 5
>>> w = 10
>>> z
5
>>> w
10
>>> (z, w)
(5, 10)
>>> z, w
(5, 10)
>>> z, w = w, z
>>> #what will z be now?
>>> z
10
>>> w
5
>>> tmp = z
>>> z = 2
>>> z = w
>>> #that z = 2 was a typo
>>> w = tmp
>>>