我不知道这一点有点愚蠢，但是我今天尝试这样做，当它不起作用时感到很惊讶。...
我有一个带有演示脚本的目录C:\test，我们叫它demo.py
C:\test中，那么我可以做python demo.py。容易C:\开始，它是python test\demo.py 如果C：\ test 在路径上怎么办？
我希望现在可以从任何地方进行python demo.py，但是...
python: can't open file 'demo.py': [Errno 2] No such file or directory
我觉得很愚蠢，因为我想这很简单，但是我四处寻找并且没有找到解决方案。从根本上来说，我是否对Python解释器如何找到要运行的脚本有误解？我认为这与PYTHONPATH无关，因为我知道这与脚本中模块的加载有关。
顺便说一下，这是在Windows 7上。
答案 0 :(得分：0)
The PATH is only used to search for commands. A first way is that a Python script can be used directly as a command and in that case the PATH will be used: just use demo.py instead of python demo.py.
It will rely on OS specific ways. On Windows, file type (given by the extension - here .py) can be given default application to process them, while on Unix-like, the first line of a script can declare the program that will process it.
Alternatively, python allows to launch a module that will be searched in the PYTHONPATH (not PATH) by using python -m module or for Windows py -m module.