Comment 0 for bug 1826627

Extension fails display context menu entry with Nemo 4.0.x and later. Nemo extensions for 4.0.x and later are required to be python3 compatible.

Running Nemo from a terminal on opening the right click context menu the terminal the following error is produced.

Traceback (most recent call last):
  File "/usr/share/nemo-python/extensions/folder-color.py", line 168, in get_file_items
    return self._generate_menu(items)
  File "/usr/share/nemo-python/extensions/folder-color.py", line 240, in _generate_menu
    if self._check_generate_restore(items):
  File "/usr/share/nemo-python/extensions/folder-color.py", line 297, in _check_generate_restore
    item_path = urllib.unquote(item.get_uri()[7:])
AttributeError: module 'urllib' has no attribute 'unquote'
Traceback (most recent call last):
  File "/usr/share/nemo-python/extensions/folder-color.py", line 168, in get_file_items
    return self._generate_menu(items)
  File "/usr/share/nemo-python/extensions/folder-color.py", line 240, in _generate_menu
    if self._check_generate_restore(items):
  File "/usr/share/nemo-python/extensions/folder-color.py", line 297, in _check_generate_restore
    item_path = urllib.unquote(item.get_uri()[7:])
AttributeError: module 'urllib' has no attribute 'unquote'

Workaround - in /usr/share/nemo-python/extensions/folder-color.py replace all instances of urllib.unquote with urllib.parse.unquote e.g

sudo sed -i "s|urllib.unquote|urllib.parse.unquote|g" /usr/share/nemo-python/extensions/folder-color.py

Nemo 4.0.x is the default version in Mint Cinnamon 19.1 which uses the Bionic version of the package.

steve@steve-HP-Pavilion-g6-Notebook-PC:~$ inxi -Sxxxz
System:
  Host: steve-HP-Pavilion-g6-Notebook-PC Kernel: 4.15.0-48-generic x86_64
  bits: 64 compiler: gcc v: 7.3.0 Desktop: Cinnamon 4.0.10 wm: muffin 4.0.7
  dm: LightDM 1.26.0 Distro: Linux Mint 19.1 Tessa base: Ubuntu 18.04 bionic
steve@steve-HP-Pavilion-g6-Notebook-PC:~$ nemo --version
nemo 4.0.6