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：

    <pre name="code" class="python">-----------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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