code: def dist(ctx):
      """Package for distribution"""
      header(dist.__doc__)
      with ctx.cd(ROOT):
          ctx.run("python setup.py bdist_wheel", pty=True)
  
imports: from __future__ import unicode_literals, absolute_import
  import os
  import sys
  from datetime import datetime
  from invoke import task
label_desc: Use image node_id 18 for calling a global function with example usage: dist(ctx) without return types