python代码
调用c函数时char***
的处理
outtab = pointer(c_char_p()) len = c_int() test2('sb2',pointer(outtab),byref(len)) for i in range(len.value): print outtab[i]
将字典按键排序输出
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按键反序:
#pids is a dict for k,v in sorted(pids.items(),reverse=True): print(k,v)
一个按加入顺序排序的dict
class OrderedDict(dict): ''' >>> d = dict() >>> d['a']=1 >>> d['b']=2 >>> d['c']=3 >>> d.items() [('a', 1), ('c', 3), ('b', 2)] >>> d = OrderedDict() >>> d['a'] = 1 >>> d['b'] = 2 >>> d['c'] = 3 >>> list(d.items()) [('a', 1), ('b', 2), ('c', 3)] ''' def __init__(self, *args, **kw): super(OrderedDict, self).__init__(*args, **kw) self.ordered_keys = [] #self.keys() def __setitem__(self, key, value): if not key in self: self.ordered_keys.append(key) super(OrderedDict, self).__setitem__(key, value) def items(self): for key in self.ordered_keys: yield key, self[key]