#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import math
def my_abs(x):
? ? if not isinstance(x, (int, float)):
? ? ? ? raise TypeError('bad operand type')
? ? if x >= 0:
? ? ? ? return x
? ? else:
? ? ? ? return -x
def move(x, y, step, angle=0):
? ? nx = x + step * math.cos(angle)
? ? ny = y - step * math.sin(angle)
? ? return nx, ny
n = my_abs(-20)
print(n)
x, y = move(100, 100, 60, math.pi / 6)
print(x, y)
# TypeError: bad operand type:
my_abs('123')
