Avoid two or multiple plots being wrongly/incorrectly/unnecessarily mixed/overlap

Avoid Two or Multiple Plots being Wrongly/Incorrectly/wrongly/incorrectly/Unnecessarily Mixed/Overlap
- Python for Integrated Circuits -
- An Online Book -

Python for Integrated Circuits http://www.globalsino.com/ICs/

Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix

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Avoid image mixing wrongly, when ploting images, by calling "plt.close()" after each plot. Code:
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       Output:

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Plot images with image mixing wrongly. Code:
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       Output (the second and third images include all the images in plot earlier):

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