一、定義
OrderedDict是對字典的補充，它記住了字典元素的添加順序。
eg：

二、OrderedDict相關(guān)方法
def clear(self): # real signature unknown; restored from __doc__
"""
　　　　od.clear() -> None. Remove all items from od.
　　　　清除有序字典中的元素
　　"""
pass
eg：

?

def copy(self): # real signature unknown; restored from __doc__
"""
　　　　od.copy() -> a shallow copy of od
　　　　有序字典的淺拷貝
　　"""
pass



def items(self, *args, **kwargs): # real signature unknown
取有序字典的元素
　　 pass

def keys(self, *args, **kwargs): # real signature unknown
　　取key
pass

def move_to_end(self, *args, **kwargs): # real signature unknown
"""
Move an existing element to the end (or beginning if last==False).

Raises KeyError if the element does not exist.
When last=True, acts like a fast version of self[key]=self.pop(key).
　　把指定的元素放到尾部
"""
pass
eg：

?

def pop(self, k, d=None): # real signature unknown; restored from __doc__
"""
od.pop(k[,d]) -> v, remove specified key and return the corresponding
value. If key is not found, d is returned if given, otherwise KeyError
is raised.
　　彈出指定的key
"""
pass
eg：

?

def popitem(self): # real signature unknown; restored from __doc__
"""
od.popitem() -> (k, v), return and remove a (key, value) pair.
Pairs are returned in LIFO order if last is true or FIFO order if false.
　　從尾部開始彈出
"""
pass
eg：

?

def setdefault(self, k, d=None): # real signature unknown; restored from __doc__
"""
　　　　od.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in od
　　　　設(shè)置默認值
　　"""
pass

def update(self, *args, **kwargs): # real signature unknown
pass

def values(self, *args, **kwargs): # real signature unknown
pass

轉(zhuǎn)載于:https://www.cnblogs.com/baotouzhangce/p/6182366.html

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