Change browser download location and temporary user data directory to:

• If $PYPPETEER_HOME environment variable is defined, use this location.
• Otherwise, use platform dependent locations, based on appdirs:
  • 'C:\Users\<username>\AppData\Local\pyppeteer' (Windows)
  • '/Users/<username>/Library/Application Support/pyppeteer' (OS X)
  • '/home/<username>/.local/share/pyppeteer' (Linux)
  • or in '$XDG_DATA_HOME/pyppeteer' if $XDG_DATA_HOME is defined

See https://github.com/pyppeteer/pyppeteer/blob/0.0.20/CHANGES.md#version-0020-2018-08-11

On my test system:

# ls -l ~/.local/share/pyppeteer/local-chromium/
total 4
drwxrwxr-x 3 patrick patrick 4096 Oct  8 14:23 588429