使用来自python的lzma压缩并阻塞直到压缩完成

Question

我正在使用lzma从python压缩文件。压缩后我想将文件移动到另一个位置。问题是，当我使用lzma的参数调用subprocess.Popen时，它立即返回而不等待压缩完成，我最终移动了部分文件。

我的代码：

def CheckOutputLzma(args, outfile, cwd=None, print_stdout=False, print_stderr=True,
            fail_if_stderr=False):
    if not cwd:
        cwd = os.getcwd()

    child = subprocess.Popen(args, stdout=outfile, stderr=subprocess.PIPE, cwd=cwd)
    stdout, stderr = child.communicate()

    if child.returncode or (stderr and fail_if_stderr):
        raise CalledProcessError(cwd, args, stdout + stderr)

    if print_stdout:
        sys.stdout.write(stdout)
    if print_stderr:
        sys.stderr.write(stderr)

        return stdout


def CompressLibrary(inputFile , library , outputPath):

    if os.path.isfile(outputPath+"/"+library+ ".lzma"):
        os.remove(outputPath+"/"+library+ ".lzma")

    command = (['lzma'] + ['-5'] + ['-c'] + [inputFile])

    with open(outputPath+"/"+library+ ".lzma","wb") as out:
        CheckOutputLzma(command, out)

#Wait until the lzma is complete

check_command = (['lzma'] + ['-t'] + [outputPath+"/"+library+ ".lzma"])

while True:
    #stdout = build_utils.CheckOutput(check_command, None, True, True)
    stdout = subprocess.check_output(check_command)
    print("STDOUT : " + stdout)
    break

    if (not stdout):
       break