Python f-string E999-Syntar Error invalid syntax

Hello, I have experienced this error message at this line: self.assertRedirects(response, f'/lists/{new_list.id}/') The ') signs are only underlined and flake says it is invalid syntax

[HakunaMatata42]

I had flake8 installed for both python2 and python3 and flake8 was being defaulted to python2, so I did the following to resolve the issue

pip uninstall flake8
pip3 install flake8
# This adds python3 flake8 installation to the PATH
export PATH=${PATH}:/Library/Frameworks/Python.framework/Versions/3.6/bin
flake8 --help

[matthew-nm]

The solution that worked for me is that from @Trivikram1. I essentially had to do

pip uninstall flake8
pip3 install flake8

even though my original flake8 installation was installed to my python3 virtual env using pip, it was the python2 version of flake8. You can tell the difference by looking at the CPython version number printed by the flake8 --version command. Before reinstalling, the CPython version printed was “2.7.15”, but after reinstalling with pip3, the CPython version was “3.6.5”.