无法安装python ast

Question

我有 python 3.6。我正在尝试使用以下方法安装 ast 库：

sudo pip3 install ast

我收到了这个错误，我不知道为什么以及如何解决它。

WARNING: The directory '/home/x/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. WARNING: The directory '/home/x/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. Collecting ast   Downloading https://files.pythonhosted.org/packages/4b/fb/2b954d2a38c9a0ef1da6a46737a75b4dbf6f60e5dad0f267a4ec5ece20de/AST-0.0.2.tar.gz
    ERROR: Complete output from command python setup.py egg_info:
    ERROR: Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-72e5wirc/ast/setup.py", line 6, in <module>
        README = codecs.open(os.path.join(here, 'AST/README'), encoding='utf8').read()
      File "/usr/local/lib/python3.6/codecs.py", line 897, in open
        file = builtins.open(filename, mode, buffering)
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-72e5wirc/ast/AST/README'
    ---------------------------------------- ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-72e5wirc/ast/

Answer 1

ast默认包含在python中，无需安装。 https://docs.python.org/3/library/ast.html