python save graphiz as png code example
Example 1: how to save plot in python
In [5]: plt.savefig('books_read.png')
Example 2: how to save matplotlib figure to png
In [5]: plt.savefig('books_read.png')
In [5]: plt.savefig('books_read.png')
In [5]: plt.savefig('books_read.png')