Note that in order to avoid potential conflicts with other packages it is

Python3 -m pip show scikit-learn # to see which version and where scikit-learn is installed python3 -m pip freeze # to see all packages installed in the active virtualenv python3 -c 'import sklearn sklearn.show_versions()' python -m pip show scikit-learn # to see which version and where scikit-learn is installed python -m pip freeze # to see all packages installed in the active virtualenv python -c 'import sklearn sklearn.show_versions()' python -m pip show scikit-learn # to see which version and where scikit-learn is installed python -m pip freeze # to see all packages installed in the active virtualenv python -c 'import sklearn sklearn.show_versions()' python -m pip show scikit-learn # to see which version and where scikit-learn is installed python -m pip freeze # to see all packages installed in the active virtualenv python -c 'import sklearn sklearn.show_versions()' conda list scikit-learn # to see which scikit-learn version is installed conda list # to see all packages installed in the active conda environment python -c 'import sklearn sklearn.show_versions()'

Terminal conda python version