code: def unionify(self, other):
      for k, v in other.items():
          if k in self.result:
              self.result[k] = self.result[k].union(v)
          else:
              self.result[k] = v
  
imports: import gast
  from collections import defaultdict
  from functools import reduce
  from pythran.analyses import Aliases, CFG
  from pythran.intrinsic import Intrinsic
  from pythran.passmanager import ModuleAnalysis
  from pythran.interval import Interval, IntervalTuple, UNKNOWN_RANGE
  from pythran.tables import MODULES, attributes
label_desc: Use image node_id 3 for calling the RangeValuesBase obj's underlying member method code with example usage: obj.unionify(other) without return types