遍历python字典几种方法总结(推荐)

如下所示：

aDict = {\'key1\':\'value1\', \'key2\':\'value2\', \'key3\':\'value3\'}
print \'-----------dict-------------\'
for d in aDict:
  print \"%s:%s\" %(d, aDict[d])

print \'-----------item-------------\'
for (k,v) in aDict.items():
  print \'%s:%s\' %(k, v)

#效率最高

print \'------------iteritems---------\'
for k,v in aDict.iteritems():
  print \'%s:%s\' % (k, v)

#最笨的方法

print \'---------iterkeys---------------\'
for k in aDict.iterkeys():
  print \'%s:%s\' % (k, aDict[k])

print \'------------iterkeys, itervalues----------\'
for k,v in zip(aDict.iterkeys(), aDict.itervalues()):
  print \'%s:%s\' % (k, v)

运行结果：

-----------dict-------------
key3:value3
key2:value2
key1:value1
-----------item-------------
key3:value3
key2:value2
key1:value1
------------iteritems---------
key3:value3
key2:value2
key1:value1
---------iterkeys---------------
key3:value3
key2:value2
key1:value1
------------iterkeys, itervalues----------
key3:value3
key2:value2
key1:value1
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