python3 - 如何创建tar和zip文件。得到错误

Question

python3 - 如何创建tar和zip文件

prevdir = os.getcwd()    
os.chdir('/tmp/')
print("Compressing files to %s..." % FILE)
with tarfile.open(FILE, "w:gz") as tar:
    tar.add(build_path)
os.chdir(prevdir)

收到以下错误：

Traceback (most recent call last):   
File "./tar_n_upload.py", line 74, in <module>
    main(sys.argv[1:])   
File "./tar_n_upload_vcs.py", line 69, in main
    with tarfile.open(FILE, "w:gz") as tar: 
AttributeError: 'TarFile' object has no attribute '__exit__'

我不知道我在这里遗漏了什么。