class_docstr: tzinfo class based on win32's timezones available in the registry.
class_docstr_tok: ["tzinfo","class","based","on","win32","'s","timezones","available","in","the","registry","."]
code: def _dst_base_offset(self):
      return self._dst_base_offset_
  
imports: import datetime
  import struct
  from six.moves import winreg
  from six import text_type
  from ._common import tzrangebase
label_desc: Use image node_id 7 for calling the tzwinbase obj's underlying member method code with example usage: obj._dst_base_offset() and returns: self