def __init__(self, stdout=subprocess.PIPE, stderr=subprocess.STDOUT):
        """

        :type stdout: BinaryIO,int
        :type stderr: BinaryIO,int
        """
        self.output = ''
        self._stdout = stdout
        self._stderr = stderr
        self.env = {}
def __init__ ( self , stdout = subprocess . PIPE , stderr = subprocess . STDOUT ) : self . output = '' self . _stdout = stdout self . _stderr = stderr self . env = { }
:type stdout: BinaryIO,int
        :type stderr: BinaryIO,int