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from pyx import *
# colors and symbols to use (alternatingly)
colors = [color.rgb.red, color.rgb.green, color.rgb.blue, color.gray.black]
symbols = [graph.style._diamondsymbol, graph.style._trianglesymbol, graph.style._circlesymbol]
# create the graph styles to be used below
symbol = graph.style.symbol(symbol=attr.changelist(symbols),
symbolattrs=[deco.stroked.clear,
attr.changelist([deco.filled([cc]) for cc in colors])])
line = graph.style.line(lineattrs=[attr.changelist(colors),
attr.changelist([style.linestyle.solid])])
g = graph.graphxy(width=8, x=graph.axis.linear(min=0, max=1))
g.plot([graph.data.function("y(x) = x**%d" % i, points=8) for i in range(1, 7)],
styles=[line, symbol])
g.writeEPSfile("usesymbol")
g.writePDFfile("usesymbol")
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