Get the wrong path when execute python code by Nodejs

Question

I am using python-shell to call a python script from my nodejs server. The python script will open a file named myfile.txt and read its content: path = os.path.abspath("myfile.txt") f = open(path, 'r')

It runs normally when I execute the python code from Python command line but when I try to call it from Nodejs, turns out that the path became "path-to-nodejs-server/bin/myfile.txt" and I catch an error "No such file/ directory .."

How can I fix it?

is the file in the same directory as python? in which case you could replace os.path.abspath("myfile.txt") by os.path.join(os.path.dirname(__file__),"myfile.txt") — Jean-François Fabre
– Jean-François Fabre ♦, Commented May 4, 2017 at 11:55

Jean-François Fabre · Accepted Answer · 2017-05-04 11:59:27Z

1

os.path.abspath("myfile.txt")

doesn't fix anything (unless you use os.chdir at some point, but that's not the case here)

The problem here is that you don't have a say on the current directory when your python script is run from nodejs.

but you know where your data file is stored relatively from your script.

Since __file__ contains the absolute path of your script you can locate your data file by:

os.path.join(os.path.dirname(__file__),"myfile.txt")

answered May 4, 2017 at 11:59

Jean-François Fabre♦

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