安装py2exe

对于python 3.x
pip install py2exe 可以直接安装

对于python 2.7, 需要下载exe安装，
https://sourceforge.net/projects/py2exe/files/py2exe/0.6.9/

这里详细记录一下python2.7下 py2exe的安装注意的问题
1. 安装时出现如下错误，
Python version 2.7 required, which was not found in the registry
解决：
copy下面的脚本，创建一个registry.py, 然后运行python registry.py

import sys

from _winreg import *

# tweak as necessary
version = sys.version[:3]
installpath = sys.prefix

regpath = "SOFTWARE\Python\Pythoncore\%s\" % (version)
installkey = "InstallPath"
pythonkey = "PythonPath"
pythonpath = "%s;%s\Lib\;%s\DLLs\" % (
    installpath, installpath, installpath
)

def RegisterPy():
    try:
        reg = OpenKey(HKEY_CURRENT_USER, regpath)
    except EnvironmentError as e:
        try:
            reg = CreateKey(HKEY_CURRENT_USER, regpath)
            SetValue(reg, installkey, REG_SZ, installpath)
            SetValue(reg, pythonkey, REG_SZ, pythonpath)
            CloseKey(reg)
        except:
            print "*** Unable to register!"
            return
        print "--- Python", version, "is now registered!"
        return
    if (QueryValue(reg, installkey) == installpath and
        QueryValue(reg, pythonkey) == pythonpath):
        CloseKey(reg)
        print "=== Python", version, "is already registered!"
        return
    CloseKey(reg)
    print "*** Unable to register!"
    print "*** You probably have another Python installation!"

if __name__ == "__main__":
    RegisterPy()

错误
import py2exe_util ImportError: DLL load failed: %1 is not a valid Win32 application.
解决：这是安装错了py2exe的版本。下载列表中的win64, amd64似乎不是指OS的版本。我PC是win64，但是安装win64版本有上述错误。安装py2exe-0.6.9.win32-py2.7.exe后解决了问题。

生成exe

按照http://www.py2exe.org/index.cgi/Tutorial#Step1中的guide 不再详述。
注意的问题：
如果生成的exe遇到local module 找不到的情况，
解决方案：在所有subfolder中加上空白的 __init__.py

Reference

http://www.py2exe.org/

http://www.py2exe.org/index.cgi/Tutorial#Step1