创建压缩的gzip文件python 3

根据 https://docs.python.org/3/library/gzip.html 创建压缩的gzip文件需要以下内容:

import gzip
content = b"Lots of content here"
with gzip.open('/home/joe/file.txt.gz', 'wb') as f:
    f.write(content)

AttributeError: module 'gzip' has no attribute 'open'

不确定发生了什么。。。。