[Python] Which numerical integration technique is used by scipy.integrate.quad (e.g. Simpson,...

I used scipy.integrate.quad to calculate an integral from 0 to infinite.

It gave a very good result, but now I would like to know which integration method it uses.

The documentation says the fortran library QUADPACK is used: but the question about the method remains). Is there any way for printing the technique? Does the software apply some decision tree?

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