pi = 0
N = 100
for k in range(N):
pi += 1/pow(16, k) * (4 / (8 * k + 1) - 2 /(8 * k + 4) - 1/(8 * k + 5) - 1 /(8 * k + 6))
print("圓周率值是:{}".format(pi))
pi = 0
N = 100
for k in range(N):
pi += 1/pow(16, k) * (4 / (8 * k + 1) - 2 /(8 * k + 4) - 1/(8 * k + 5) - 1 /(8 * k + 6))
print("圓周率值是:{}".format(pi))
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