python计算圆周率pi的方法

本文实例讲述了python计算圆周率pi的方法。分享给大家供大家参考。具体如下：

from sys import stdout
scale = 10000
maxarr = 2800
arrinit = 2000
carry = 0
arr = [arrinit] * (maxarr + 1)
for i in xrange(maxarr, 1, -14):
 total = 0
 for j in xrange(i, 0, -1):
   total = (total * j) + (scale * arr[j])
   arr[j] = total ％ ((j * 2) - 1)
   total = total / ((j * 2) - 1)
 stdout.write("％04d" ％ (carry + (total / scale)))
 carry = total ％ scale

运行结果如下：

31415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185

希望本文所述对大家的Python程序设计有所帮助。