mvoorhie@virgil:~/Projects/Courses/PracticalBioinformatics/python$ cd examples/
mvoorhie@virgil:~/Projects/Courses/PracticalBioinformatics/python/examples$ python
Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56) 
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> d = {"A":"T","T":"A","C":"G","G","C"}
  File "<stdin>", line 1
    d = {"A":"T","T":"A","C":"G","G","C"}
                                    ^
SyntaxError: invalid syntax
>>> d = {"A":"T","T":"A","C":"G","G":"C"}
>>> d["A"]
'T'
>>> d["G"]
'C'
>>> d["G"] = "T"
>>> d
{'A': 'T', 'C': 'G', 'T': 'A', 'G': 'T'}
>>> d["G"] = ["T","A"]
>>> d["G"]
['T', 'A']
>>> from random import choice
>>> s = "".join(choice("ATGC") for i in xrange(20))
>>> s
'AGGACGCGGCTACCGTCACT'
>>> p = {}
>>> for (i,c) in enumerate(s):
...     try:
...             p[c].append(i)
...     except KeyError:
...             p[c] = [i]
... 
>>> p
{'A': [0, 3, 11, 17], 'C': [4, 6, 9, 12, 13, 16, 18], 'T': [10, 15, 19], 'G': [1, 2, 5, 7, 8, 14]}
>>> for (key,val) p.items():
  File "<stdin>", line 1
    for (key,val) p.items():
                  ^
SyntaxError: invalid syntax
>>> for (key,val) in p.items():
...     print key, len(val)
... 
A 4
C 7
T 3
G 6
>>> p["T"]
[10, 15, 19]
>>> 
>>> d                                          
{'A': 'T', 'C': 'G', 'T': 'A', 'G': ['T', 'A']}
>>> d["G"] = "C"
>>> d
{'A': 'T', 'C': 'G', 'T': 'A', 'G': 'C'}
>>> s
'AGGACGCGGCTACCGTCACT'                         
>>> for i in reverse("palindrome"):
...     print i
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'reverse' is not defined
>>> for i in reversed("palindrome"):
...     print i
... 
e
m
o
r
d
n
i
l
a
p
>>> def f(i,j):
...     if(i == j):
...             
  File "<stdin>", line 2
    if(i == j):
              ^
IndentationError: expected an indented block
>>> def score(i,j):
...     if(i == j):
...             return 1.0
...     else:
...             return -1.0
... 
>>>