class_docstr: Give a sentiment intensity score to sentences.
class_docstr_tok: ["Give","a","sentiment","intensity","score","to","sentences","."]
code: def _amplify_ep(text):
      # check for added emphasis resulting from exclamation points (up to 4 of them)
      ep_count = text.count("!")
      if ep_count > 4:
          ep_count = 4
      # (empirically derived mean sentiment intensity rating increase for
      # exclamation points)
      ep_amplifier = ep_count * 0.292
      return ep_amplifier
  
imports: import os
  import re
  import math
  import string
  import codecs
  import json
  from itertools import product
  from inspect import getsourcefile
  from io import open
label_desc: Use image node_id 12 for calling the SentimentIntensityAnalyzer obj's underlying member method code with example usage: obj._amplify_ep(text) and returns: ep_amplifier