code: def show(keyword=''):
      
      keyword = keyword.strip().lower()
      max_len = max(len(k) for k in env.iterkeys())
      keyword_found = False
      for k in sorted(env.keys()):
          if keyword and keyword not in k.lower():
              continue
          keyword_found = True
          #print '%s: %s' % (k, env[k])
          print('%s: ' % (k.ljust(max_len),))
          pprint(env[k], indent=4)
      if keyword:
          if not keyword_found:
              print('Keyword "%s" not found.' % keyword)
docs: Displays a list of all environment key/value pairs for the current role.