程序错误 希望大家能够解答一下

留丿白

def fixedPoint(f, epsilon):
    """   
     f: a function of one argument that returns a float
    epsilon: a small float      returns the best guess when that guess is less than epsilon
     away from f(guess) or after 100 trials, whichever comes first.
    """  
    guess = 1.0    for i in range(100):
        if f(guess) - guess < epsilon:
            return guess
        else:
            guess = f(guess)
    return guess
f代表一个返回浮点数的函数
epsilon代表一个浮点数
这个程序有一个错误但是我又不知道怎么修改 求助

crossin先生

报错发上来