code: def _parse_varint(iterator):
      b = next(iterator)
      val = b & 63
      while b & 64:
          val <<= 6
          b = next(iterator)
          val |= b & 63
      return val
  
imports: import sys
  import types
  import collections
  import io
  from opcode import *
  from opcode import __all__, _cache_format, _inline_cache_entries, _nb_ops, _intrinsic_1_descs, _intrinsic_2_descs, _specializations, _specialized_opmap
label_desc: Use image node_id 17 for calling a global function with example usage: _parse_varint(iterator) and returns: val