code: def doctest_multiline3():
      """Multiline examples with blank lines.
  
      In [12]: def h(x):
         ....:     if x>1:
         ....:         return x**2
         ....:     # To leave a blank line in the input, you must mark it
         ....:     # with a comment character:
         ....:     #
         ....:     # otherwise the doctest parser gets confused.
         ....:     else:
         ....:         return -1
         ....:
  
      In [13]: h(5)
      Out[13]: 25
  
      In [14]: h(1)
      Out[14]: -1
  
      In [15]: h(0)
      Out[15]: -1
      """
  
imports: from IPython.utils.py3compat import doctest_refactor_print
label_desc: Use image node_id 4 for calling a global function with example usage: doctest_multiline3() without return types