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How it works...
Each of the preceding code statements is self-explanatory. The important thing to note is in non-interactive mode, you write complete code for the graph you want to display, and call plt.show() explicitly to display the graph on the screen.
The following is the output obtained:
The latest versions of Jupyter Notebook seem to display the figure without calling plt.show() command explicitly. However, in Python shell or embedded applications, plt.show() or plt.draw() is required to display the figure on the screen.