class_docstr: A class simulating an readable socket, optionally raising a
  special exception every other read.
class_docstr_tok: ["A","class","simulating","an","readable","socket",",","optionally","raising","a","special","exception","every","other","read","."]
code: def __init__(self, data, interrupt_every=0):
      self.data = data
      self.counter = 0
      self.pos = 0
      self.interrupt_every = interrupt_every
  
label_desc: Use image node_id 1 to create a new MockSocket object  with example: obj = MockSocket(data, interrupt_every)