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Why the show() funtion does not show in the right position?

print ("Create a graph")
G = Graph(sparse=True)
G.allow_multiple_edges(True)
G.add_edge(1,2,"blue")
G.add_edge(2,3,"green")
G.add_edge(3,1,"red")
G.add_edge(1,4,"green")
G.add_edge(2,4,"red")
G.add_edge(3,4,"blue")

for i in range(5):
    print ("BEFORE SHOW ", i)
    show(G)
    print ("AFTER SHOW ", i)

    print ("BEFORE PLOT ", i)
    G.plot()
    print ("AFTER PLOT ", i)

Why the show() funtion does not show in the right position?

It should show between the BEFORE and AFTER prints, but actually if you run the code, it will appear right before the first print (see the code): print ("BEFORE SHOW ", i)

print ("Create a graph")
G = Graph(sparse=True)
G.allow_multiple_edges(True)
G.add_edge(1,2,"blue")
G.add_edge(2,3,"green")
G.add_edge(3,1,"red")
G.add_edge(1,4,"green")
G.add_edge(2,4,"red")
G.add_edge(3,4,"blue")

for i in range(5):
    print ("BEFORE SHOW ", i)
    show(G)
    print ("AFTER SHOW ", i)

    print ("BEFORE PLOT ", i)
    G.plot()
    print ("AFTER PLOT ", i)