print ord("a")
97

print ord("A")
65

print ord("b")
98

print ord("$")
36


phrase = "Who are all those people in our hallway out there"
alist = phrase.split()
print alist
['Who', 'are', 'all', 'those', 'people', 'in', 'our', 'hallway', 'out', 'there']

x = " ".join(alist)
print x
Who are all those people in our hallway out there

print type(x)
<type 'str'>

y = "-".join(alist)
print y
Who-are-all-those-people-in-our-hallway-out-there

word = "python"
print word.split()
['python']

w = list(word)
print w
['p', 'y', 't', 'h', 'o', 'n']

wAsWord = "".join(w)
print wAsWord
python


zz = "***".join(w)
print zz
p***y***t***h***o***n


p = "*".join([4,5,6)]
  File "<ipython-input-22-212995e79393>", line 1
    p = "*".join([4,5,6)]
                       ^
SyntaxError: invalid syntax

p = "*".join([4,5,6])
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-23-0e8193c6c357>", line 1, in <module>
    p = "*".join([4,5,6])
TypeError: sequence item 0: expected string, int found

a = ["a", 'b', 'z', 'e']
print a
['a', 'b', 'z', 'e']


for w in a:
    print w
    
a

b

z

e


for w in range(len(a)):
    print w
    
0

1

2

3


for w in range(len(a)):
    print w, a[w]
    
0 a

1 b

2 z

3 e


for w in range(len(a)):
    print a[w], a[w-1]
    
a e

b a

z b

e z


print a
['a', 'b', 'z', 'e']


for w in range(len(a)):
    if w>0:
        print a[w], a[w-1]
        
b a

z b

e z