add conditional (py3) writeSVGfile function export

2 files changed, 9 insertions, 4 deletions

diff --git a/README.md b/README.md
index 70af703..031f8cc 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ It is a work in progress, broken, and will set your computer on fire.
 using PyX
 
 g = graph.graphxy(width=8)
-plot(graph_data_function("y(x)=sin(x)/x", min=-15, max=15))
+plot(g, graph_data_function("y(x)=sin(x)/x", min=-15, max=15))
 writeEPSfile(g, "function")
 writePDFfile(g, "function")
 writeSVGfile(g, "function")
diff --git a/src/PyX.jl b/src/PyX.jl
index b4097a9..9210f5e 100644
--- a/src/PyX.jl
+++ b/src/PyX.jl
@@ -12,8 +12,9 @@ export graph, graph_axis, graph_axis_painter, graph_data, graph_style, graph_sty
 export graph_graphxyz, graph_data_function
 export epsfile, deformer, trafo, attr, metapost_path
 export plot, stroke
-export writeEPSfile, writePDFfile, writeSVGfile
+export writeEPSfile, writePDFfile
 export pyx_fill, pyx_append, pyx_insert, pyx_text
+# See also Python3 section at end
 
 canvas = pywrap(pyimport("pyx.canvas"))
 path = pywrap(pyimport("pyx.path"))
@@ -88,8 +89,12 @@ function writePDFfile(g::PyObject, args...; kwargs...)
     return g[:writePDFfile](args...; kwargs...)
 end
 
-function writeSVGfile(g::PyObject, args...; kwargs...)
-    return g[:writeSVGfile](args...; kwargs...)
+# Some newer features only in recent (Python3) versions of PyX
+if PyCall.pyversion > v"3"
+    export writeSVGfile
+    function writeSVGfile(g::PyObject, args...; kwargs...)
+        return g[:writeSVGfile](args...; kwargs...)
+    end
 end
 
 end # module PyX