【Python】PYTHONHOME与PYTHONPATH对模块搜索顺序的影响

ゝ一纸荒年。 2022-12-07 15:15 147阅读 0赞

# PYTHONHOME指定两个目录；PYTHONPATH指定一个目录
    [tony@centos8 ~]$ PYTHONHOME=/home/tony/.local/python3.8:/home/tony/.local/python3 \
    PYTHONPATH=/home/tony/.local/python3.8/lib64/python3.8/lib-dynload \
    python3 -m site
    sys.path = [
    # 最先搜索当前目录(在哪个目录中执行python，就搜索那个目录)
        '/home/tony',
    # PYTHONPATH指定的搜索目录
        '/home/tony/.local/python3.8/lib64/python3.8/lib-dynload',
    # PYTHONHOME中指定的第一个目录生成两个搜索路径
        '/home/tony/.local/python3.8/lib/python38.zip',
        '/home/tony/.local/python3.8/lib/python3.8',
    # PYTHONHOME中指定的第二个目录生成一个搜索路径
        '/home/tony/.local/python3/lib/python3.8/lib-dynload',
    # 第三方site-package搜索路径
        '/home/tony/.local/python3.8/lib/python3.8/site-packages',
    ]
    USER_BASE: '/home/tony/.local' (exists)
    USER_SITE: '/home/tony/.local/lib/python3.8/site-packages' (doesn't exist)
    ENABLE_USER_SITE: True

[tony@centos8 python3.8]$ PYTHONHOME=/home/tony/.local/python3.8 PYTHONPATH=/home/tony/.local/python3.8/lib64/python3.8/lib-dynload bin/python3
    Python 3.8.5 (default, Sep 16 2020, 04:32:29)
    [GCC 8.3.1 20191121 (Red Hat 8.3.1-5)] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import sys
    >>> sys.path
    # 第一个空目录表示搜索当前目录
    ['', '/home/tony/.local/python3.8/lib64/python3.8/lib-dynload', '/home/tony/.local/python3.8/lib/python38.zip', '/home/tony/.local/python3.8/lib/python3.8', '/home/tony/.local/python3.8/lib/python3.8/lib-dynload', '/home/tony/.local/python3.8/lib/python3.8/site-packages']
    >>>