Problem

I am using pyunpack to unpack a zip-file:

Archive(os.path.join(directory_zip, foldername + ".7z")).extractall(
                data_path
            )

However I run into the following error:

patool not found! Please install patool!

When checking, patool is installed in the global Python-environment. I double-checked that I am using the global Python interpreter and that all versions are compatible. I am also able to run patool from the CMD. Everything seems to work since patool.exe is added to the Windows PATH variable: C:\Users\user\AppData\Local\Programs\Python\Python310 is added to the PATH variable and in here patool.exe is located

Temporary Fix After further digging I found that the following in the init.py from pyunpack:

def _exepath(cmd: str) -> Optional[str]:
    for p in os.environ["PATH"].split(os.pathsep):
        fullp = os.path.join(p, cmd)
        if os.access(fullp, os.X_OK):
            return fullp
    return None



def extractall_patool(self, directory: str, patool_path: Optional[str]) -> None:
                    log.debug("starting backend patool")
                    if not patool_path:
                       patool_path = _exepath("patool") # patool
                   if not patool_path:
                       raise ValueError("patool not found! Please install patool!")

So it seems like there is a check if the OS has rights to execute patool. This fails since the script checks for: C:\Users\user\AppData\Local\Programs\Python\Python310\patool

while in reality (since I have file extensions enabled on Windows) the following is present: C:\Users\user\AppData\Local\Programs\Python\Python310\patool.exe

I can make the code work and temporarily solve the issue by changing the following in the _init.py in pyunpack:

def extractall_patool(self, directory: str, patool_path: Optional[str]) -> None:
                    log.debug("starting backend patool")
                    if not patool_path:
                       patool_path = _exepath("patool.exe") # Changed from patool --> patool.exe
                   if not patool_path:
                       raise ValueError("patool not found! Please install patool!")

This works!

Questions

1. How should I solve this issue in a cleaner way?
2. How can I use my script in a virtual environment? I think in that case patool will be installed in the virtual environment and thus I need to add the path of the venv\scripts to the PATH variable of Windows? This seems cumbersome.

Thanks in advance!