本文实例讲述了Python求解平方根的方法。分享给大家供大家参考。具体如下:
主要通过SICP的内容改写而来。基于newton method求解平方根。代码如下:
- #!/usr/bin/python
- def sqrt_iter(guess,x):
- if(good_enough(guess, x)):
- print guess
- else:
- sqrt_iter(improve(guess, x),x)
- def improve(guess, x):
- return average(guess, x/guess)
- def average(x,y):
- return (x+y)/2
- def good_enough(guess,x):
- if(abs(guess * guess -x) < 0.0001):
- return True
- else:
- return False
- def sqrt_oliver(x):
- sqrt_iter(1.0,x)
- sqrt_oliver(5)
希望本文所述对大家的Python程序设计有所帮助。