compile mycli by pyinstaller

背景 

在服务器没有安装mycli，安装的python版本不一致的情况下，想到通过pyinstaller编译出mycli的二进制文件直接运行。

pyinstaller -F /usr/bin/python3.6/bin/mycli --onefile 编译成功，然后悲剧的情况来了

Traceback (most recent call last):
  File "mycli", line 11, in <module>
  File "site-packages/click/core.py", line 829, in __call__
  File "site-packages/click/core.py", line 782, in main
  File "site-packages/click/core.py", line 1066, in invoke
  File "site-packages/click/core.py", line 610, in invoke
  File "site-packages/mycli/main.py", line 1053, in cli
  File "site-packages/mycli/main.py", line 118, in __init__
  File "site-packages/configobj.py", line 554, in __getitem__
KeyError: 'main'
[277772] Failed to execute script mycli

问题解决

阅读mycli源码，发现问题出在配置读取部分

site-packages/mycli/main.py文件中

PACKAGE_ROOT = os.path.abspath(os.path.dirname(__file__))
default_config_file = os.path.join(PACKAGE_ROOT, 'myclirc')

问题就出现在了__file__的使用上，mycli会读取site-packages/mycli/main.py同级目录下的myclirc, AUTHORS, SPONSORS三个文件，但是pyinstaller编译时，并不会打包这三个文件，导致运行出错。

接下来就是打包，让我们看看pyinstaller --add-data参数的使用方法

format: {source}{os_separator}{destination}

destination file or files: desination folder which will contain your source files

NOTE: NOT destination file name, desination folder path, which is RELATIVE path of distination root, NOT absolute path

这里相对路径的含义比较有意思，上面的报错信息路径为：site-packages/mycli/main.py，但是mycli/main.py中打印出的path确是/tmp/_MEItHovkQ/mycl

基于以上信息，我们可以这样编译mycli

#!/bin/sh

pyinstaller -F /usr/local/tencent/python3.6/bin/mycli --onefile 
--add-data "/usr/local/tencent/python3.6/lib/python3.6/site-packages/mycli/myclirc:mycli" 
--add-data "/usr/local/tencent/python3.6/lib/python3.6/site-packages/mycli/AUTHORS:mycli" 
--add-data "/usr/local/tencent/python3.6/lib/python3.6/site-packages/mycli/SPONSORS:mycli" 

pyinstaller与__file__ 

#测试代码
#main.py
#!/usr/bin/python3

import aaa
import os

print(os.path.abspath(os.path.dirname(__file__)))


# aaa/__init__.py
import os
print(os.path.abspath(os.path.dirname(__file__)))

#直接执行脚本

root@b1f294ad4d44 ~# python3 main.py
/root/aaa
/root

#pyinstaller编译后执行

root@b1f294ad4d44 ~# ./dist/main
/tmp/_MEIqn3ZG5/aaa
/root

可见，入口python文件其实就是编译出来的二进制文件，所有引用的lib根目录是 /tmp/xxx/<lib-name>