How to install npm modules using a python script in the directory where my script is located

Question

The file structure should look like :

test.py

node_modules (The folder containing installed npm modules)

I have tried this :

import subprocess
import os
dir_path = os.path.dirname(os.path.realpath(__file__)) #holds the directory where python script is located
directory where python script is located
os.chdir(dir_path)
subprocess.call(["npm","init"])
subprocess.call(["npm","install"])

Error :

Traceback (most recent call last): File "c:\Users\Alifreeze.vscode\extensions\ms-python.python-2020.1.58038\pythonFiles\ptvsd_launcher.py", line 43, in main(ptvsdArgs) File "c:\Users\Alifreeze.vscode\extensions\ms-python.python-2020.1.58038\pythonFiles\lib\python\old_ptvsd\ptvsd__main__.py", line 432, in main
run() File "c:\Users\Alifreeze.vscode\extensions\ms-python.python-2020.1.58038\pythonFiles\lib\python\old_ptvsd\ptvsd__main__.py", line 316, in run_file runpy.run_path(target, run_name='main') File "C:\Users\Alifreeze\AppData\Local\Programs\Python\Python37-32\lib\runpy.py", line 263, in run_path pkg_name=pkg_name, script_name=fname) File "C:\Users\Alifreeze\AppData\Local\Programs\Python\Python37-32\lib\runpy.py", line 96, in _run_module_code mod_name, mod_spec, pkg_name, script_name) File "C:\Users\Alifreeze\AppData\Local\Programs\Python\Python37-32\lib\runpy.py", line 85, in _run_code exec(code, run_globals) File "c:\Users\Alifreeze\Desktop\ShellScripts\npm.py", line 6, in subprocess.call(["npm","init"]) File "C:\Users\Alifreeze\AppData\Local\Programs\Python\Python37-32\lib\subprocess.py", line 323, in call with Popen(*popenargs, **kwargs) as p: File "C:\Users\Alifreeze\AppData\Local\Programs\Python\Python37-32\lib\subprocess.py", line 775, in init restore_signals, start_new_session) File "C:\Users\Alifreeze\AppData\Local\Programs\Python\Python37-32\lib\subprocess.py", line 1178, in _execute_child startupinfo) FileNotFoundError: [WinError 2] The system cannot find the file specified

manoj yadav · Accepted Answer · 2020-01-28 10:13:37Z

1

import subprocess
subprocess.call(["npm","init"])
subprocess.call(["npm","install"])

try this code in the test.py script, package.json should be present in the same folder while running the python script

edited Jan 28, 2020 at 10:13

answered Jan 28, 2020 at 9:53

manoj yadav

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7 Comments

Ali Khan Over a year ago

what if nothing was there ? how do i run npm init and then npm install ? Also i want to install say aws-sdk how should i do that

manoj yadav Over a year ago

you can add subprocess.call("npm","init") above the npm install line, this will ask you setup question for node application and you can proceed from there

Ali Khan Over a year ago

Okay let me try this i will verify the answer and upvote it if this works.. cheers :)

manoj yadav Over a year ago

Can you share detailed error ? Also I tried this solution with Ubuntu OS, I think you are using Windows OS ?

manoj yadav Over a year ago

Cheers :) Happy Coding

|

Ali Khan · Accepted Answer · 2020-01-28 10:41:34Z

0

This worked for me!

import subprocess
import os
dir_path = os.path.dirname(os.path.realpath(__file__)) #holds the directory where python script is located
os.chdir(dir_path)
subprocess.check_call('npm init', shell=True)

answered Jan 28, 2020 at 10:41

Ali Khan

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