pyrsistent requires Python 3 but the running Python is 2

pyrsistent requires Python '>=3.5' but the running Python is 2.7.17 ## Error Description ```sh pyrsistent requires Python '>=3.5' but the running Python is 2.7.17 ERROR: Service 'limo' failed to build: The command '/bin/sh -c pip install --upgrade pip pip install pykitti pip install ipython==5.5.0 pip install ipykernel==4.8.2 jupytext --upgrade' returned a non-zero code: 1 ``` ## Solution ```sh pip install pyrsistent==0.16.1 ```