Changed the use of pyglet plot module

This example uses, as of now, the old pyglet plotting module
which is not working right now.
Changed so that it uses the new plot API.
Trying to fix sympy#10243

examples/advanced/autowrap_ufuncify.py

@@ -28,7 +28,8 @@
 import mpmath
 from sympy.utilities.autowrap import ufuncify
 from sympy.utilities.lambdify import implemented_function
-from sympy import symbols, legendre, Plot, pprint
+from sympy import symbols, legendre, pprint
+from sympy.plotting import plot
 
 
 def main():
@@ -46,7 +47,7 @@ def main():
     print("Compiling legendre ufuncs and checking results:")
 
     # Let's also plot the ufunc's we generate
-    plot1 = Plot(visible=False)
+    #plot1 = Plot(visible=False)
     for n in range(6):
 
         # Setup the SymPy expression to ufuncify
@@ -72,8 +73,12 @@ def main():
 
         # We can also attach the autowrapped legendre polynomial to a sympy
         # function and plot values as they are calculated by the binary function
-        g = implemented_function('g', binary_poly)
-        plot1[n] = g(x), [200]
+        #g = implemented_function('g', binary_poly)
+        if n==0:
+            plot1=plot(expr, x, show=False)
+        else:
+            plot1.extend(plot(expr, x, show=False))
+
 
     print("Here's a plot with values calculated by the wrapped binary functions")
     plot1.show()