平时有很多项目的目录，需要频繁的在这些目录中切换，效率很低。 之前总是在shell里ctrl + r 或者 cd -，后来目录多了这招也不好使了 我是个懒人，什么事重复三遍就不能忍 然后就用Python造了个命令go，可以方便智能的随意切换目录 先上代码，再继续说

#.bashrc中加入
go () {
	cd $(python /Users/auxten/scripts/thepath.py "$1")
}

/Users/auxten/scripts/thepath.py内容如下

#!/usr/bin/env python
# -*- coding: utf8 -*-

import sys
import os

path_dic = {
    "flow":"/Users/auxten/Codes/Android/VPN/flow",
    "byod":"/Users/auxten/Codes/Android/byod/git/byod",
    "vine":"/Users/auxten/Codes/baidu/ops-src/ops-vine",
    "gko":"/Users/auxten/Codes/gko_pool",
    "cdn":"/Users/auxten/Codes/baidu/ops-src/dlPlatform/log_analytics/web/web_env/",
    "proxy":"/Users/auxten/Dropbox/插件/spiderProxy/",
    "vpn":"/Users/auxten/Codes/Android/VPN/flow",
}

search_path = [
    "/Users/auxten/Codes/Android/byod/trunk/",
    "/Users/auxten/Codes/baidu/ops-src/",
    "/Users/auxten/Codes/",
]

path = "~"
try:
    path = path_dic[sys.argv[1]]
except KeyError,IndexError:
    for dir in search_path:
        tmp_path = os.path.join(dir, sys.argv[1])
        if os.path.isdir(tmp_path):
            path = tmp_path
            break
            

print path

  如果在path_dic里指定类似这种

"flow":"/Users/auxten/Codes/Android/VPN/flow",

go flow
##就相当于
cd /Users/auxten/Codes/Android/VPN/flow

如果在path_dic里没有指定就会在search_path中按顺序查找flow文件夹，找到后就cd进去