class_docstr: Capture the stdout (like prints)
  From: https://stackoverflow.com/a/16571630/6772672
code: def __enter__(self):
      self._stdout = sys.stdout
      sys.stdout = self._stringio = StringIO()
      return self
  
imports: from icevision.imports import *
  from io import StringIO
label_desc: Use image node_id 2 for calling the CaptureStdout obj's underlying member method code with example usage: obj.__enter__() and returns: self