Python - 变量赋值和重新赋值 - 这里的 X 发生了什么？

Question

我正在研究一个关于变量的谜题，但无法弄清楚我的变量如何在以下过程中从 1 变为 0：

x = 1
y = 0

# first assignment
x = x^y
print(f'x value is {x} after reassignment')
# x value is 1 after reassignment

# second assignment
y = y^x
print(f'y value is {y} after reassignment')
# y value is 1 after reassignment

print(f'{y} = {y} ^ {x}')
# returns 1 = 1 ^ 1

# x value is now 1 but somehow ZERO after the assignment below
x = x^y   
print(f'{x} = {y} ^ {x} how did x become zero from this assignment?')
# returns 0 = 1 ^ 0

我想了解 x 是如何变为零的。谢谢！

Answer 1

您误解了您使用的运算符。在 Python 中，^ 运算符是按位异或。因此1 ^ 1 = 0。您对1 = 1 ^ 1 的假设是不正确的。如果您试图提升权力，请使用x**y。