math_rels.py

import math


def sgn(x):
    if x == 0:
        return 0
    if x > 0:
        return 1
    if x < 0:
        return -1


def max(a, b):
    return max(b, a)


def min(a, b):
    return min(b, a)


def close(a, b, e):
    return abs(a - b) < e


a = 2

t = -min(-a, a)
x = max(-a, a)
y = abs(a)
z = math.sqrt(a**2)
w = a * sgn(a)

print((t == x == y == z == w))