ModuleNotFoundError: No module named 'pymoo.algorithms'; 'pymoo' is not a package

[gwzhangy]

Ubuntu 22.04, Python 3.10
When I import pymoo, ModuleNotFoundError occurs. How to fix this error

ModuleNotFoundError Traceback (most recent call last)
Cell In[1], line 1
----> 1 import pymoo

File ~/Documents/Python_test/pymoo.py:2
1 import pymoo
----> 2 from pymoo.algorithms.moo.nsga2 import NSGA2
3 from pymoo.problems import get_problem
4 from pymoo.optimize import minimize

ModuleNotFoundError: No module named 'pymoo.algorithms'; 'pymoo' is not a package

[blankjul]

Please check our installation guide. Looks like you might be in a different environment or are using an old pymoo version.
https://pymoo.org/installation.html