x = y = [1,2,3]
z = [1,2,3]
# ==用来检查两个对象是否想等，is用来检测两个对象是否相同
print(x==z)
print(x is z)
print(x is y)
print(x==y)
107088dc38db8ebb9aee40f6ab88f73083aea3f6
<mask token>

<mask token>
print(x == z)
print(x is z)
print(x is y)
print(x == y)

x = y = [1, 2, 3]
z = [1, 2, 3]
print(x == z)
print(x is z)
print(x is y)
print(x == y)

x = y = [1,2,3]
z = [1,2,3]
# ==用来检查两个对象是否想等，is用来检测两个对象是否相同
print(x==z)
print(x is z)
print(x is y)
print(x==y)