The ZeroBundle/Python/python script has an issue on line 4 where it needs to wrap the $DIR/python2.7 part in double quotes. Otherwise it fails to start ZeroNet if it's in a path that has a space in it. This is what the entire file should look like instead:
#!/bin/bash
DIR=$(dirname "$0")
export SSL_CERT_FILE=$DIR/../ssl/cert.pem
"$DIR/python2.7" "$@
I'm not sure where to submit a PR for this hence the issue instead.