python 中调用shell命令

subprocess模块

根据Python官方文档说明，subprocess模块用于取代上面这些模块。有一个用Python实现的并行ssh工具—mssh，代码很简短，不过很有意思，它在线程中调用subprocess启动子进程来干活。

1. >>> from subprocess import call
2. >>> call(["ls", "-l"])

subprocess与system相比的优势是它更灵活（你可以得到标准输出，标准错误，“真正”的状态代码，更好的错误处理，等..）。我认为使用os.system已过时，或即将过时。

#!/usr/bin/env python
#encoding=utf-8

import os
from subprocess import call
call(["ls","-l"])

path=os.getenv("phone_path")
print os.getenv("phone_path")
call(["adb","root"])
call(["adb","pull","/system/lib64/libteec.so",path+"/ree/client/libteec.so_64"])

可以执行获取环境变量，

执行adb pull命令。

太厉害了。

#!/usr/bin/env python
#encoding=utf-8

import os
from subprocess import call #通过call调用shell命令
from hashlib import sha1    #计算sha1sum值

call(["ls","-l"])

#实现从jenkins环境变量获取值
path=os.getenv("phone_path")
print os.getenv("phone_path")

#实现adb pull,环境变量直接引用不用加引号，用+即可
call(["adb","root"])
call(["adb","pull","/system/lib64/libteec.so",path+"/ree/client/libteec.so_64"])

#实现adb push
#call(["adb","remount"])
#call(["adb","push",path+"/ree/client/libteec.so_64","/system/lib64/libteec.soa"])

#实现adb shell
#call(["adb","root"])
#call(["adb","shell","chmod","-R","777","/system/lib/nutlet_armtz/"])
#call(["adb","shell","./system/lib/nutlet_armtz/nutlet_helloworld"])

#计算sha1sum值
def getSha1(filename): #计算sha1
    sha1Obj = sha1()
    with open(filename,'rb') as f:
        sha1Obj.update(f.read())
    return sha1Obj.hexdigest()

print getSha1(path+"/ree/client/libteec.so_64")

#下面的调用可以当做一个整体，类似于在终端输入命令，其中间仍然可以调用参数，参数在引号外面
call("sha1sum " + path + "/ree/client/libteec.so_64 > remote_sha1", shell=True)
call("sha1sum " + path + "/ree/client/libteec.so_64 >> remote_sha1", shell=True)
#call(["sha1sum",path+"/ree/client/libteec.so_64",">","remote_sha1"])

print 'ok'