从python2.7的一个向上目录中读取文件

Question

I am trying to read file in a python script from one up level. My file structure is as below:

code
 - scripts
     -myscript.py
 - .env

In .env I have my configs.

And I am trying to read this file in myscript.py

I did the below to read it:

  envfile = open("../.env", "r")

Now when I run this python script from the scripts directory it works fine

This works good:

cd /var/www/html/code/scripts
python myscript.py

But if I do:

cd
python /var/www/html/code/scripts/myscript.py

Doesn't work and gives IOError: [Errno 2] No such file or directory: '../.env'

How can I make it to run if I pass the absolute or relative path in terminal?

Answer 1

You can use pathlib2 :

• pathlib2 is the version for python 2.7
• pathlib Module: Taming the File System

    from pathlib import Path

    path = Path(__file__).resolve().parents[1].joinpath(".env")
    envfile = open(path)

Answer 2

import os
p = os.path.realpath(__file__)
envfile = open('/'.join(p.split('/')[:-1])+'/../.env')

also works