PackagesNotFoundError: The following packages are not available from current channels: - python=3.7* Current channels: - defaults To search for alternate channels that may provide the conda package you're looking for, navigate to https://anaconda.org and use the search bar at the top of the page. Note: 'use_only_tar_bz2' is enabled. This might be omitting some packages from the index. Set this option to 'false' and retry.