[python] pickle 的使用

如果是写成pickle.dumps(edgeList,f)竟然就出错了。

with open(os.path.join(ROOTPATH,'edgeList.pickle'),'wb') as f:
     pickle.dump(edgeList,f)

原来dumps不是用于给文件中写数据的，而是直接返回一个bytes对象。

Return the pickled representation of the object as a [bytes]
Arguments protocol and fix_imports have the same meaning as in [dump()]

# load功能
# load 从数据文件中读取数据，并转换为python的数据结构
with open('D:/tmp.pk', 'r') as f:
    data = pickle.load(f)