python计算圆周率pi，python圆周率pi,from sys imp

python计算圆周率pi，python圆周率pi,from sys imp

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