无法打开文件'file.py'：[Errno 2] 没有这样的文件或目录

Question

I'm using Windows10 and wants to run my python script by cmd

The command:

python file.py

return the message:

python: can't open file 'file.py': [Errno 2] No such file or directory

but when I run python C:\Python37\projects\file.py it's run properly

also, I added C:\Python37\projects to the PATH, but it doesn't help

Answer 1

When you run a script from the prompt you need to use the whole path to the file (as you did when running python C:\Python37\projects\file.py) or you need to first move to the directory containing the file and then run, otherwise you rise the error you got (cause there's no file with such name in your current directory). You can move to another directory using the command cd. So what you could do if you don't want to type the path every time you run the code is:

cd C:\Python37\projects
python file.py

Answer 2

You can set an environment variable PYTHONPATH to a directory where you put your scripts. Then you can run your script just as

python script.py

Answer 3

Open your script in another code editor like VS and check extension. It usually keeps txt behind py and that is why you get an error. Or in Options, if you use Windows, Hide extensions for known file types.

Answer 4

Check out the environment you have done your installation. Then call the path of your directory rightly.

cd C:\Python37\projects

python file.py