m = {}
print type(m)
<type 'dict'>


m = {"fred":"apple", "Bo":"kiwi"}
print m
{'Bo': 'kiwi', 'fred': 'apple'}


m["Sue"] = "banana"
print m
{'Sue': 'banana', 'Bo': 'kiwi', 'fred': 'apple'}


m["Sue"] = "kiwi"
print m
{'Sue': 'kiwi', 'Bo': 'kiwi', 'fred': 'apple'}


print m.values()
['kiwi', 'kiwi', 'apple']


print m.keys()
['Sue', 'Bo', 'fred']


for key in keys():
    print key,m[key]
    
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-12-abd02acb9f91>", line 1, in <module>
    for key in keys():
NameError: name 'keys' is not defined

for key in m.keys():
    print key, m[key]
    
Sue kiwi

Bo kiwi

fred apple


for (key,value) in m.items():
    print key,value
    
Sue kiwi

Bo kiwi

fred apple


for k,v in m.iteritems():
    print k,v
    
Sue kiwi

Bo kiwi

fred apple


print m.items()
[('Sue', 'kiwi'), ('Bo', 'kiwi'), ('fred', 'apple')]


print m.iteritems()
<dictionary-itemiterator object at 0x0000000003EBB048>