Append a directory to PATH Environment Variable in Windows

Question

So, I have this batch file that supposedly appends my script to the path variable

@echo OFF

setx path "%path%;%cd%\\script.py"

But I e

Answer 1

setx path c:\whatever

For path setx appends the path specified to the existing path. You don't specify the existing paths, only the new one. It also won't add a path twice.

Here's something I use

%windir%\system32\setx path %~sdp0 > "%temp%\filter.tmp"

The redirection hides error messages if I try and add twice. See the call /? command if you don't know what %~sdp0 is