# Original Python:
#   from pyx import *
#   from pyx.metapost.path import beginknot, endknot, smoothknot, tensioncurve

#   p1, p2, p3, p4, p5 = (0, 0), (2, 1.33), (1.3, 3), (0.33, 2.33), (1, 1.67)
#   openpath = metapost.path.path([
#       beginknot(*p1), tensioncurve(), smoothknot(*p2), tensioncurve(),
#       smoothknot(*p3), tensioncurve(), smoothknot(*p4), tensioncurve(),
#       endknot(*p5)])
#   closedpath = metapost.path.path([
#       smoothknot(*p1), tensioncurve(), smoothknot(*p2), tensioncurve(),
#       smoothknot(*p3), tensioncurve(), smoothknot(*p4), tensioncurve(),
#       smoothknot(*p5), tensioncurve()])
#   c = canvas.canvas()
#   for p in [p1, p2, p3, p4, p5]:
#       c.fill(path.circle(p[0], p[1], 0.05), [color.rgb.red])
#       c.fill(path.circle(p[0], p[1], 0.05), [color.rgb.red, trafo.translate(2, 0)])
#   c.stroke(openpath)
#   c.stroke(closedpath, [trafo.translate(2, 0)])

#   c.writeEPSfile("metapost")
#   c.writePDFfile("metapost")
#   c.writeSVGfile("metapost")

using PyX

beginknot = metapost_path.beginknot
endknot = metapost_path.endknot
smoothknot = metapost_path.smoothknot
tensioncurve = metapost_path.smoothknot

p1, p2, p3, p4, p5 = (0, 0), (2, 1.33), (1.3, 3), (0.33, 2.33), (1, 1.67)
openpath = metapost_path.path([
    beginknot(p1...), tensioncurve(), smoothknot(p2...), tensioncurve(),
    smoothknot(p3...), tensioncurve(), smoothknot(p4...), tensioncurve(),
    endknot(p5...)])
closedpath = metapost_path.path([
    smoothknot(p1...), tensioncurve(), smoothknot(p2...), tensioncurve(),
    smoothknot(p3...), tensioncurve(), smoothknot(p4...), tensioncurve(),
    smoothknot(p5...), tensioncurve()])
c = canvas.canvas()
for p in [p1, p2, p3, p4, p5]:
    fill(c, path.circle(p[0], p[1], 0.05), [color_rgb.red])
    fill(c, path.circle(p[0], p[1], 0.05), [color_rgb.red, trafo.translate(2, 0)])
stroke(c, openpath)
stroke(c, closedpath, [trafo.translate(2, 0)])

writeEPSfile(c, "metapost")
writePDFfile(c, "metapost")