一些小工具（重新发明的轮子）

我们都不想重新发明轮子，然而有时候就是没有办法

GPAcalc: Weighted average to calculate your GPA. (What a tiresome work to write such codes!)

IgnaleoG: Combat-proven destroyer (a type of battleship) sending HTTP requests with stability and virtually unlimited concurrency. It runs as an HTTP server, and launches jobs when you visit it. Example offered at https://github.com/Hecate2/ISML_auto_voter and mysql.py in this repository. Recommended accessories: retryapi.py & compat.py.

mysql.py & sqlalchemyOps.py: test the performance of mysql libraries with IgnaleoG. Gevent does not speed up SQL queries!

retryapi.py & compat.py: They provide decorators for non-asynchronous functions. Retry running the decorated function for a few times when an Exception occurs in the function.

arrayvideo: plays a 3-dimensional numpy array[height, width, number_of_frames] as a video on Windows

grayimg: transform any image into gray a one. Just faster and more convenient than heavy softwares.

tiebaUrlEncrypt: This is not meant to encrypt messages to confuse humans. You know Baidu Tieba forbids all kinds of URLs, so we have to post URLs encrypted with this tool (enc.py) to confuse Tieba.
这个轮子超级难造。单纯的Python很难通用全操作系统。可能以后会做成浏览器插件的形式。也许还需要一套更复杂更通用的加密规则。
This wheel, with only Python scripts, does not bring real convenience to all operating systems. I am considering to build a browser extension instead.
Example input and outut:
https://github.com/Hecate2/ISML_auto_voter/raw/master/DestroyerIGN/CINT%20the%20Space%20Fleet%20Hecate2%20(%E6%9C%AA%E9%85%8D%E4%B9%90).docx
䁨䁴䁴䁰䁳䀺䀯䀯䁧䁩䁴䁨䁵䁢䀮䁣䁯䁭䀯䁈䁥䁣䁡䁴䁥䀲䀯䁉䁓䁍䁌䁟䁡䁵䁴䁯䁟䁶䁯䁴䁥䁲䀯䁲䁡䁷䀯䁭䁡䁳䁴䁥䁲䀯䁄䁥䁳䁴䁲䁯䁹䁥䁲䁉䁇䁎䀯䁃䁉䁎䁔䀥䀲䀰䁴䁨䁥䀥䀲䀰䁓䁰䁡䁣䁥䀥䀲䀰䁆䁬䁥䁥䁴䀥䀲䀰䁈䁥䁣䁡䁴䁥䀲䀥䀲䀰䀨䀥䁅䀶䀥䀹䁃䀥䁁䁁䀥䁅䀹䀥䀸䀵䀥䀸䁄䀥䁅䀴䀥䁂䀹䀥䀹䀰䀩䀮䁤䁯䁣䁸
enc.py uses simple XOR (exclusive OR, 0 xor 1 = 1) operations mapping URLs to Chinese characters. To restore the original URL, use the encrypted output as the input of enc.py. The encrypter and the decrypter should use the same program and the same parameter. Enjoy URLs of magic realism in Tieba!
Notice that enc.py is not safe at all as cryptography. Do not encrypt important messages only with enc.py.
输入方式：命令行argv[1]参数直接输入需要加密的字符串，或者命令行不输入参数，由程序自行读取input.txt
安卓手机使用方法：安装QPython3，把enc.py下载到手机上，在enc.py旁边建立input.txt（内含需要加密或解密的内容），运行enc.py
Windows使用方法：安装Python3，在enc.py旁边建立input.txt（内含需要加密或解密的内容），运行enc.py