python 怎麽遍歷 dict 的keys

d是dict()類型

1：for key in d:

print key,d[key]

2:for key in d.keys():

print key,d[key]

3:for key,value in d.items():

print key,value

4. for key,value in d.iteritems():

print key,value

5. for key in d.iterkeys():

print key,d[key]