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#coding:utf-8

'''

filename: simdict.py

'''

class SimDit:

def __init__(self, k, v):

self.dct = dict([(k, v)])

def __setitem__(self, k, v):

self.dct[k] = v

def __getitem__(self, k):

return self.dct[k]

def __len__(self):

return len(self.dct)

def __delitem__(self, k):

del self.dct[k]

d = SimDit('name', 'Laoqi')

d['lang'] = 'python'

d['city'] = 'Soochow'

print(d['city'])

print(len(d))

del d['city']

print(d.dct)