code: def setup_tree(ctx, verbose=None, root=None, tree_dir=None, modules_dir=None):
      ''' Sets up the SDSS tree enviroment '''
      print('Setting up the tree')
      ctx.run('python bin/setup_tree.py -t {0} -r {1} -m {2}'.format(tree_dir, root, modules_dir)f setup_tree(ctx, verbose=None, root=None, tree_dir=None, modules_dir=None):
      ''' Sets up the SDSS tree enviroment '''
      print('Setting up the tree')
      ctx.run('python bin/setup_tree.py -t {0} -r {1} -m {2}'.format(tree_dir, root, modules_dir))
docs: Sets up the SDSS tree enviroment