python 机器移植

利用的是python的pip功能（今天上python官网，发现2.7竟然在上个月更新了个新版本 惊诧！现在安装默认自带PIP）

从老机器执行

pip freeze > requirements.txt  

新机器安装python版本后运行

pip install -r requirements.txt  

就会一个一个安装的，当然会有一定的坑

 

 

坑1：

有些版本被官方删除了，建议本地也更新版本 毕竟删除版本可能有什么严重的BUG

 

 

 

 

坑2：

有些windows的是用exe安装的。需要去官网重新下载EXE

提示以下报错的解决方案

Python version 2.7 required, which was not found in the registry

建立一个文件 register.py 内容如下. 然后执行该脚本.

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()

 

 

坑3：

error: Microsoft Visual C++ 9.0 is required. Get it from http://aka.ms/vcpython27

去http://aka.ms/vcpython27下相关组件