Node.js-Python外壳

Question

I've been having some issues with installing python-shell.

WARNING! I'm a novice at Javascript however I eat, drink and sleep Python. I would love to include Python in whatever program I'm working on (if it's practical).

I am creating some desktop applications and would love the make them look modern via a little Html, CSS, Javascript spice.

Checking my Node version:

C:\nodejs\py-js\test>npm -v6.4.1

Installing Python-Shell via npm:

C:\nodejs\py-js\test>npm install python-shell
npm WARN saveError ENOENT: no such file or directory, open 'C:\nodejs\py-js\test\package.json'
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN enoent ENOENT: no such file or directory, open 'C:\nodejs\py-js\test\package.json'
npm WARN test No description
npm WARN test No repository field.
npm WARN test No README datanpm WARN test No license field.
python-shell@1.0.6 added 1 package from 1 contributor and audited 1 package in 1.827s found 0 vulnerabilities

npm test

C:\nodejs\py-js\test2>npm test
npm ERR! path C:\nodejs\py-js\test2\package.json
npm ERR! code ENOENT
npm ERR! errno -4058
npm ERR! syscall open
npm ERR! enoent ENOENT: no such file or directory, open 'C:\nodejs\py-js\test2\package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent
npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\kurup\AppData\Roaming\npm-cache\_logs\2018-12-19T20_15_56_010Z-debug.log

HELP! :(

Answer 1

You haven't initialized the package. Run this to create your package.json file:

npm init

Then you can define your test script.

Answer 2

The problem occurs because you are trying to run your program with the npm test command line.

This is the npm command to run a specific script, in this case the "test" script that you should provide in your package.json file. Since you do not create a package.json at all, this command fails.

For exemple, if you use npm init to generate a package.json file, you will get this default "test" script:

{
  ...
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  }
}

To launch your program, you can use:

node test.js

Or you could add a "start" script in your package.json and use:

npm start