compression.py 文件源码

def __init__(self, path, mode='w'):
        self.name = path
        self.outfile = open(path, mode)
        self.devnull = open(os.devnull, 'w')
        self.closed = False
        try:
            # Setting close_fds to True is necessary due to
            # http://bugs.python.org/issue12786
            self.process = Popen(
                [get_program_path('gzip')], stdin=PIPE, stdout=self.outfile,
                stderr=self.devnull, close_fds=True)
        except IOError:
            self.outfile.close()
            self.devnull.close()
            raise