Python保存并读取一个字典

　　参考资料：

　　https://kite.com/python/answers/how-to-save-a-dictionary-to-a-file-in-python　　

dictionary_data = {"a": 1, "b": 2}

a_file = open("data.pkl", "wb")
pickle.dump(dictionary_data, a_file)
a_file.close()

a_file = open("data.pkl", "rb")
output = pickle.load(a_file)
print(output)
## OUTPUT
## {'a': 1, 'b': 2}
a_file.close()