python tests/square_test.py error

[yangbiaobiao500]

We have a requirement to use Dirt as a dependency for another project that runs in Python2.7 only.
These are the versions of the corresponding dependencies I installed

[yangbiaobiao500]

I said above that I installed in development mode

[yangbiaobiao500]

Although there are still problems shown in the above picture, can this prove that I installed the dirt successfully?

[tlok666]

I come across the same error!