编写一个Python函数来计算Pi

Question

新手：

刚学了Python，这条让我大便。它提出了一个手动计算Pi的函数，Madhava way.-也被称为练习16，从这里开始：http://interactivepython.org/courselib/static/thinkcspy/Functions/thinkcspyExercises.html

有人能看看我的混乱和过于复杂的代码，告诉我是否遗漏了什么？非常感谢。（先看一下wiki页面上的等式，否则我的代码就没有意义了——好吧，它仍然可能没有意义。）

 import math

 def denom_exp(iters):
    for i in range(0, iters):
      exp = 3^iters
      return exp

 def base_denom(iters):
    for i in range(0, iters):
      denom = 1 + 2*iters
      return denom

 def myPi(iters):
    sign = 1
    pi = 0
    for i in range(0, iters):
       pi = pi + sign*(1/((base_denom(iters))*denom_exp(iters)))
       sign = -1 * sign
    pi = (math.sqrt(12))*pi
    return pi

 thisisit = myPi(10000)
 print(thisisit)

Answer 1

试试这段代码，手动计算π，Madhava方式。在

import math

def myPi(iters):
  sign = 1
  x = 1
  y = 0
  series = 0 
  for i in range (iters):
    series = series + (sign/(x * 3**y))
    x = x + 2
    y = y + 1
    sign = sign * -1
  myPi = math.sqrt(12) * series

  return myPi

print(myPi(1000))