This repo contains some code that simulates rain fall in a square field and counts the number of drops that fall in an inscribed circle so as to estimate pi.

python Estimate_pi.py 500

This returns:

----------------------
500 drops
pi estimated as:
    3.112
----------------------

but also outputs a plot:

If we have 100,000 drops we get:

If we have 1,000,000 drops we get:

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When attributing this work, please include me (but don't feel obliged to: I'd just be happy to know if anyone made use of it :) ).