Python读取Windows命令行输出

Question

我正在尝试在 python 中执行命令并在 Windows 命令行上读取其输出。

到目前为止我已经编写了以下代码:

def build():
    command = "cobuild archive"
    print "Executing build"
    pipe = Popen(command,stdout=PIPE,stderr=PIPE)
    while True:     
        line = pipe.stdout.readline()
        if line:
            print line

我想在命令行中执行命令 cobuild archive 并读取它的输出。但是，上面的代码给了我这个错误。

 File "E:\scripts\utils\build.py", line 33, in build
   pipe = Popen(command,stdout=PIPE,stderr=PIPE)
 File "C:\Python27\lib\subprocess.py", line 679, in __init__
   errread, errwrite)
 File "C:\Python27\lib\subprocess.py", line 893, in _execute_child
   startupinfo)
WindowsError: [Error 2] The system cannot find the file specified

Answer 1

以下代码有效。我需要传递 shell=True 作为参数

def build():    
command = "cobuild archive" 
pipe = Popen(command,shell=True,stdout=PIPE,stderr=PIPE)    

while True:         
    line = pipe.stdout.readline()
    if line:            
        print line
    if not line:
        break