code: def random_all():
      """A function where we ignore the output of ALL examples.
  
      Examples:
  
        # all-random
  
        This mark tells the testing machinery that all subsequent examples should
        be treated as random (ignoring their output).  They are still executed,
        so if a they raise an error, it will be detected as such, but their
        output is completely ignored.
  
        >>> 1+3
        junk goes here...
  
        >>> 1+3
        klasdfj;
  
        >>> 1+2
        again,  anything goes
        blah...
      """
      pass
  
imports: from __future__ import print_function
label_desc: Use image node_id 4 for calling a global function with example usage: random_all() without return types