在Python中如何评估两个数字是否足够接近？

def is_close(num1, num2, threshold):
    diff = abs(num1 - num2)
    return diff < threshold

# 示例使用
num1 = 3.14
num2 = 3.14159
threshold = 0.01
print(is_close(num1, num2, threshold))  # 输出：True

import math

def is_close(num1, num2, rel_tol=1e-09, abs_tol=0.0):
    return math.isclose(num1, num2, rel_tol=rel_tol, abs_tol=abs_tol)

# 示例使用
num1 = 3.14
num2 = 3.14159
rel_tol = 0.01
abs_tol = 0.01
print(is_close(num1, num2, rel_tol, abs_tol))  # 输出：True