summary:python_problem

1.need more than 1 value to unpack:

solution:[.npy] need use [unmpy.load]

2.TypeError: this constructor takes no arguments:
Solution:在python中构造函数书写格式是__init__，而不是_init_，即在init两侧都是双下划线，不是单下划线。

3.安裝：pip install PackageName

更新：pip install -U PackageName

移除：pip uninstall PackageName

搜索：pip search PackageName

帮助：pip help

4.ubuntu中运行python脚本

https://www.cnblogs.com/hester/p/5575658.html

5.MNIST_load

IOError: [Errno socket error] [Errno 101] Network is unreachable

手工下载数据包,将下载的4个数据拷贝到当前目录,read_data_sets 会先判断本地是否存在数据包。

6.__int__,class,self:

https://www.crifan.com/summary_the_basic_knowledge_about_object_oriented/

https://www.crifan.com/summary_the_meaning_of_self_and___init___in_python_and_why_need_them/

5.RuntimeError: Attempted to use a closed Session.

https://blog.youkuaiyun.com/weixin_39390732/article/details/76474294

6.append():

http://www.runoob.com/python/att-list-append.html