How to use the pyregion.region_numbers.CoordEven function in pyregion

Combine(Literal("#") + Word(alphas + nums)),  # color with '#'
              Combine(Word(alphas) + White() + Word(nums)),  # for point
              quotedString,
              QuotedString("{", endQuoteChar="}"),
              paren + ZeroOrMore(paren),
              Word(nums + " "),
              Word(nums + ".")
              ])
    expr = lhs + Optional(Literal("=").suppress() + rhs)
    expr.setParseAction(lambda s, l, tok: tuple(tok))

    return ZeroOrMore(expr)


ds9_shape_in_comment_defs = dict(
    text=wcs_shape(CoordOdd, CoordEven),
    vector=wcs_shape(CoordOdd, CoordEven,
                     Distance, Angle),
    composite=wcs_shape(CoordOdd, CoordEven, Angle),
    ruler=wcs_shape(CoordOdd, CoordEven, CoordOdd, CoordEven),
    compass=wcs_shape(CoordOdd, CoordEven, Distance),
    projection=wcs_shape(CoordOdd, CoordEven, CoordOdd, CoordEven, Distance),
    segment=wcs_shape(CoordOdd, CoordEven,
                      repeat=(0, 2))
)


class Ds9AttrParser(object):
    def set_continued(self, s, l, tok):
        self.continued = True

    def __init__(self):

paren + ZeroOrMore(paren),
              Word(nums + " "),
              Word(nums + ".")
              ])
    expr = lhs + Optional(Literal("=").suppress() + rhs)
    expr.setParseAction(lambda s, l, tok: tuple(tok))

    return ZeroOrMore(expr)


ds9_shape_in_comment_defs = dict(
    text=wcs_shape(CoordOdd, CoordEven),
    vector=wcs_shape(CoordOdd, CoordEven,
                     Distance, Angle),
    composite=wcs_shape(CoordOdd, CoordEven, Angle),
    ruler=wcs_shape(CoordOdd, CoordEven, CoordOdd, CoordEven),
    compass=wcs_shape(CoordOdd, CoordEven, Distance),
    projection=wcs_shape(CoordOdd, CoordEven, CoordOdd, CoordEven, Distance),
    segment=wcs_shape(CoordOdd, CoordEven,
                      repeat=(0, 2))
)


class Ds9AttrParser(object):
    def set_continued(self, s, l, tok):
        self.continued = True

    def __init__(self):
        self.continued = False

        ds9_attr_parser = get_ds9_attr_parser()

import copy
import warnings
from pyparsing import (Literal, CaselessKeyword, Optional, And, Or,
                       StringEnd, ParseException)
from .region_numbers import CoordOdd, CoordEven, Distance, Angle, Integer
from .parser_helper import (wcs_shape, define_shape_helper, Shape, Global,
                            RegionPusher, define_expr, define_line,
                            CoordCommand,
                            comment_shell_like, define_simple_literals)
from .ds9_attr_parser import Ds9AttrParser, get_attr
from .wcs_converter import (convert_to_imagecoord,
                            convert_physical_to_imagecoord)

ds9_shape_defs = dict(
    circle=wcs_shape(CoordOdd, CoordEven, Distance),
    rotbox=wcs_shape(CoordOdd, CoordEven, Distance, Distance, Angle),
    box=wcs_shape(CoordOdd, CoordEven, Distance, Distance, Angle),
    polygon=wcs_shape(CoordOdd, CoordEven, repeat=(0, 2)),
    ellipse=wcs_shape(CoordOdd, CoordEven, Distance, Distance, Angle, repeat=(2, 4)),
    annulus=wcs_shape(CoordOdd, CoordEven, Distance, repeat=(2, 3)),
    panda=wcs_shape(CoordOdd, CoordEven, Angle, Angle, Integer, Distance, Distance, Integer),
    pie=wcs_shape(CoordOdd, CoordEven,
                  Distance, Distance,
                  Angle, Angle),
    epanda=wcs_shape(CoordOdd, CoordEven,
                     Angle, Angle, Integer,
                     Distance, Distance, Distance,
                     Distance, Integer, Angle),
    bpanda=wcs_shape(CoordOdd, CoordEven,
                     Angle, Angle, Integer,
                     Distance, Distance, Distance,

from pyparsing import (Literal, CaselessKeyword, Optional, And, Or,
                       StringEnd, ParseException)
from .region_numbers import CoordOdd, CoordEven, Distance, Angle, Integer
from .parser_helper import (wcs_shape, define_shape_helper, Shape, Global,
                            RegionPusher, define_expr, define_line,
                            CoordCommand,
                            comment_shell_like, define_simple_literals)
from .ds9_attr_parser import Ds9AttrParser, get_attr
from .wcs_converter import (convert_to_imagecoord,
                            convert_physical_to_imagecoord)

ds9_shape_defs = dict(
    circle=wcs_shape(CoordOdd, CoordEven, Distance),
    rotbox=wcs_shape(CoordOdd, CoordEven, Distance, Distance, Angle),
    box=wcs_shape(CoordOdd, CoordEven, Distance, Distance, Angle),
    polygon=wcs_shape(CoordOdd, CoordEven, repeat=(0, 2)),
    ellipse=wcs_shape(CoordOdd, CoordEven, Distance, Distance, Angle, repeat=(2, 4)),
    annulus=wcs_shape(CoordOdd, CoordEven, Distance, repeat=(2, 3)),
    panda=wcs_shape(CoordOdd, CoordEven, Angle, Angle, Integer, Distance, Distance, Integer),
    pie=wcs_shape(CoordOdd, CoordEven,
                  Distance, Distance,
                  Angle, Angle),
    epanda=wcs_shape(CoordOdd, CoordEven,
                     Angle, Angle, Integer,
                     Distance, Distance, Distance,
                     Distance, Integer, Angle),
    bpanda=wcs_shape(CoordOdd, CoordEven,
                     Angle, Angle, Integer,
                     Distance, Distance, Distance,
                     Distance, Integer, Angle),
    point=wcs_shape(CoordOdd, CoordEven),
    line=wcs_shape(CoordOdd, CoordEven, CoordOdd, CoordEven),