Python学习笔记5(操作字典)

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)