code: def __imul__(self, scalar):
      self.scaleDeltas(scalar)
      return self
  
imports: from fontTools.misc.fixedTools import fixedToFloat, floatToFixed, floatToFixedToStr, strToFixedToFloat, otRound
  from fontTools.misc.textTools import safeEval
  import array
  from collections import Counter, defaultdict
  import io
  import logging
  import struct
  import sys
label_desc: Use image node_id 26 for calling the TupleVariation obj's underlying member method code with example usage: obj.__imul__(scalar) and returns: self