class_docstr: Seq(re1, re2, re3...) is an RE which matches |re1| followed by
  |re2| followed by |re3|...
class_docstr_tok: ["Seq","(","re1",",","re2",",","re3","...",")","is","an","RE","which","matches","|re1|","followed","by","|re2|","followed","by","|re3|","..."]
code: def __init__(self, *re_list):
      nullable = 1
      for i, re in enumerate(re_list):
          self.check_re(i, re)
          nullable = nullable and re.nullable
      self.re_list = re_list
      self.nullable = nullable
      i = len(re_list)
      match_nl = 0
      while i:
          i -= 1
          re = re_list[i]
          if re.match_nl:
              match_nl = 1
              break
          if not re.nullable:
              break
      self.match_nl = match_nl
  
imports: from __future__ import absolute_import
  import types
  from .None import Errors
label_desc: Use image node_id 1 to create a new Seq object from inherited base classes: RE with example: obj = Seq()