Final answer:
In order to save a matplotlib figure as a PNG file, we can use the savefig() function from the matplotlib library. This process encapsulates the fundamental workflow for exporting a matplotlib figure to a PNG file.
Step-by-step explanation:
Saving a matplotlib figure as a PNG file involves several straightforward steps.
Begin by importing the matplotlib library with the line 'import matplotlib.pyplot as plt.'
Next, create a figure using 'fig = plt figure(),' serving as the canvas for your visualization.
Proceed to plot your data or generate the desired visualization on the created figure.
Finally, to save the figure as a PNG file, employ the 'savefig()' function and specify the desired filename with the 'png' extension, as demonstrated by 'fig savefig('filename png').'
This process encapsulates the fundamental workflow for exporting a matplotlib figure to a PNG file, providing a portable and widely compatible image format for your visualizations.
Tailor the filename as needed to reflect the content or purpose of your visualization, ensuring a seamless integration of matplotlib graphics into your projects or reports.