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python計算圓周率pi的方法

 更新時間:2015年07月11日 16:51:40   作者:pythoner  
這篇文章主要介紹了python計算圓周率pi的方法,涉及Python針對數(shù)學運算的相關技巧,需要的朋友可以參考下

本文實例講述了python計算圓周率pi的方法。分享給大家供大家參考。具體如下:

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 

運行結果如下:

31415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679821480865132823066470938446095505822317253594081284811174502841027019385211055596446229489549303819644288109756659334461284756482337867831652712019091456485669234603486104543266482133936072602491412737245870066063155881748815209209628292540917153643678925903600113305305488204665213841469519415116094330572703657595919530921861173819326117931051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184676694051320005681271452635608277857713427577896091736371787214684409012249534301465495853710507922796892589235420199561121290219608640344181598136297747713099605187072113499999983729780499510597317328160963185

希望本文所述對大家的Python程序設計有所幫助。

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