Current working directory of PyPi package is root user folder? How to make cwd the package's di-CodePudding

I have a custom PyPi package. It is installed under Pyhon\Python38\Lib\site-packages\myCustomPackage.

In the __init__ code for myCustomPackage, I perform a few different directory operations, which failed to find the correct files and directories which reside in the Pyhon\Python38\Lib\site-packages\myCustomPackage folder.

I looked at the output of os.getcwd() and it showed the cwd to be C:\Users\TestUser, which is the root Windows user folder.

I would like the root folder to be the myCustomPackage folder.

For example, the file \myCustomPackage\__init__.py would contain

import os
class myCustomPackage():
    def __init__(self): 
        print(os.getcwd())

If I run:

from myCustomPackage import myCustomPackage
theInstance = myCustomPackage()

The output is:

C:\Users\TestUser

How can I change that to be C:\Users\TestUser\AppData\Local\Programs\Python\Python38\Lib\site-packages\myCustomPackage?

Note : I would want it to be dynamic. No hard coding, in case the python version changes or the Windows user changes.

CodePudding user response：

My solution was the following function:

import site
import os
import traceback

def changeCWD(self): 
    try: 
        sitePackages = site.getsitepackages()
        site_packages_dir = sitePackages[1]
        top_module_dir = site_packages_dir   os.path.sep   "myCustomPackage"

        os.chdir(top_module_dir)
        return True
    except: 
        self.myLogger.error("An error occurred in changeCWD")
        tb = traceback.format_exc()
        self.myLogger.exception(tb)
        return False

CodePudding user response：

To get the directory path of the current module, you can use the built-in __file__.

To set the cwd to the module directory, use:

import os
import sys
from pathlib import Path


class myCustomPackage():
    def __init__(self):
        module_directory = Path(__file__).parent
        os.chdir(module_directory)
        print(os.getcwd())