code: def _splitparam(param):
      # Split header parameters.  BAW: this may be too simple.  It isn't
      # strictly RFC 2045 (section 5.1) compliant, but it catches most headers
      # found in the wild.  We may eventually need a full fledged parser
      # eventually.
      a, sep, b = param.partition(";")
      if not sep:
          return a.strip(), None
      return a.strip(), b.strip()
  
imports: import re
  import uu
  import binascii
  import warnings
  from cStringIO import StringIO
  import email.charset
  from email import utils
  from email import errors
label_desc: Use image node_id 1 for calling a global function with example usage: _splitparam(param) and returns: a,  b, a,  None