clipper.dll permanent directory about hive HOT 3 CLOSED

never use os.cwd for finding paths! this depends on where you started the script. instead, you can find the folder including the script like this:

src_folder = os.path.dirname(__file__)

And then use os.path.join(...) to create the paths. You can add relative paths using the .. special folders to indicate "parent-directory".

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Thanks for your reply Daren! I decided to put it in the grasshopper Libraries folder, which is where some other components put their .dll files. This should avoid the need to move the .dll file to the working directory. Your thoughts?

clipper_path = os.getenv('APPDATA')+'\Grasshopper\Libraries\clipper_library.dll'

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It's a bug:

• don't concatenate strings to create paths. Use os.path.join.
  • actually, I mentioned that above...
• don't use backslashes (without escaping them) in string literals
  • unless you're using the "raw" strings: r'\Grasshopper\Libraries\clipper_library.dll'. Note the r at the beginning of the string? This tells python not to view the backslash as an escaping character. You just got lucky here. If any of the characters following the backslash had been one of those used in an escape sequence, you would not have gotten the result you expected.
• why didn't you keep the dll relative to the script? now it's harder to install your software, as you can't just "copy paste". also, you now have to figure out how to package it when publishing for pip install.
• your code is now hardcoded to look for the dll in the user's APPDATA folder - that means, it is now not possible to install the software for all users. This is a mistake I have made too with my RPS software.

The line should read:

clipper_path = os.path.join(os.getenv('APPDATA'), 'Grasshopper', 'Libraries', 'clipper_library.dll')

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