sum_random2.py

from matplotlib import pyplot as plt
import sys, random

N = int(sys.argv[1])
n = 100
L = list()

for i in range(N):
    count = 0
    prev = 0
    while True:
        r = random.random()
        if count == 0:
            count += 1
        elif prev < r:
            prev = r
            count += 1
        else:
            L.append(count)
            break
    
print(sum(L)/len(L))

'''
> p3 script.py 10000000
2.718501
'''