Last login: Wed Oct 11 10:26:06 on console
Welcome to Darwin!
mdhcp11:~ mahoney$ python
Python 2.3.5 (#1, Mar 20 2005, 20:38:20) 
[GCC 3.3 20030304 (Apple Computer, Inc. build 1809)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> vowels = [ 'a', 'e', 'i', 'o', 'u' ]
>>> vowels
['a', 'e', 'i', 'o', 'u']
>>> "hi"
'hi'
>>> 'hi'
'hi'
>>> 'What\'s up?'
"What's up?"
>>> word = 'hello'
>>> hello[-1]
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
NameError: name 'hello' is not defined
>>> word[-1]
'o'
>>> word[1]
'e'
>>> def member(thing, list):                                         
...     """Return true if 'thing' is in 'list'"""
...     for element in list:
...             if element == thing:
...                     return True
...     return False
... 
>>> member(2, [1,2,3])
True
>>> member(7, [1,2,3])
False
>>> 'a' in ['a', 'e', 'i', 'o', 'u']
True
>>> 10 % 3
1
>>> 10 % 5
0
>>> def is_factor(n, factor):
...     """return True if factor divides n"""
...     if n % factor == 0:
...             return True
...     else:
...             return False
... 
>>> is_factor(10,5)
True
>>> is_factor(10,3)
False
>>> 4 <= 4
True
>>> 4 =< 4
  File "<stdin>", line 1
    4 =< 4
       ^
SyntaxError: invalid syntax
>>> 4 != 4
False
>>> 4 is 4
True
>>> [1,2,3] == [1,2,3]
True
>>> [1,2,3] is [1,2,3]
False
>>> "Hi there" is "Hi there"
True
>>> def foo(n,m)
  File "<stdin>", line 1
    def foo(n,m)
               ^
SyntaxError: invalid syntax
>>> def foo(n,m):
...     return n % m == 0
... 
>>> foo(10,5)
True
>>> def foo(n,m):
...     answer = (n % m == 0)
...     return answer
... 
>>> is_factor
<function is_factor at 0x96730>
>>> help(is_factor)

>>> def test(n):
...     # This function does ....
...     return 1
... 
>>> test(100)
1
>>> help(test)

>>> def get_factors(n):
...     """return a list of the factors of n including 1 but not n"""
...     answer = []
...     for i in range(1,n):
...             if is_factor(n,i):
...                     answer.append(i)
...     return answer
... 
>>> get_factors(10)
[1, 2, 5]
>>> get_factors(100)
[1, 2, 4, 5, 10, 20, 25, 50]
>>> sum([1,2,3,4,5])
15
>>> def is_perfect(n):
...     """return True if n is perfect"""
...     factors = get_factors(n)
...     return sum(factors) == n
... 
>>> is_perfect(10)
False
>>> is_perfect(2)
False
>>> for i in range(100):
...     if is_perfect(i):
...             print i, "is perfect"
... 
0 is perfect
6 is perfect
28 is perfect
>>> get_factors(6)
[1, 2, 3]
>>> get_factors(28)
[1, 2, 4, 7, 14]
>>> import math
>>> print math.exp(1)
2.71828182846
>>> dir(math)
['__doc__', '__file__', '__name__', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'cosh', 'degrees', 'e', 'exp', 'fabs', 'floor', 'fmod', 'frexp', 'hypot', 'ldexp', 'log', 'log10', 'modf', 'pi', 'pow', 'radians', 'sin', 'sinh', 'sqrt', 'tan', 'tanh']
>>> math.e
2.7182818284590451
>>> math.pi
3.1415926535897931
>>>